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Revision History for A064274

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Showing entries 1-10 | older changes
Inverse of sequence A035513 considered as a permutation of the nonnegative integers.
(history; published version)
#11 by Jon E. Schoenfield at Tue Aug 04 23:42:08 EDT 2015
STATUS

editing

approved

#10 by Jon E. Schoenfield at Tue Aug 04 23:42:06 EDT 2015
MAPLE

Digits := 30 : A035513 := proc(n, k) local tau ; tau := (sqrt(5)+1)/2 ; combinat[fibonacci](k+1)*floor(n*tau)+(n-1)*combinat[fibonacci](k) ; end: A035513flat := proc(N) local r, c, k, np, n ; n := 1 : k := 1 : for np from 2 to N do n := n+1 : k := k-1 : if k = 0 then k := n: n := 1: fi ; od ; A035513(n, k) ; end: a035513 := [] : a := -1 : nmax := 300 : for n from 1 to nmax do a035513 := [op(a035513), A035513flat(n)] : od : printf("0, ") ; n := 1: while true do if member(n, a035513, 'a') then printf("%d, ", a) ; else break ; fi ; n := n+1 : od: - _# _R. J. Mathar_, Jun 26 2007

STATUS

approved

editing

#9 by Charles R Greathouse IV at Sat Oct 12 15:16:36 EDT 2013
AUTHOR

_Howard A. Landman (howard(AT)polyamory.org), _, Sep 23 2001

Discussion
Sat Oct 12
15:16
OEIS Server: https://oeis.org/edit/global/2010
#8 by Russ Cox at Fri Mar 30 17:38:42 EDT 2012
MAPLE

Digits := 30 : A035513 := proc(n, k) local tau ; tau := (sqrt(5)+1)/2 ; combinat[fibonacci](k+1)*floor(n*tau)+(n-1)*combinat[fibonacci](k) ; end: A035513flat := proc(N) local r, c, k, np, n ; n := 1 : k := 1 : for np from 2 to N do n := n+1 : k := k-1 : if k = 0 then k := n: n := 1: fi ; od ; A035513(n, k) ; end: a035513 := [] : a := -1 : nmax := 300 : for n from 1 to nmax do a035513 := [op(a035513), A035513flat(n)] : od : printf("0, ") ; n := 1: while true do if member(n, a035513, 'a') then printf("%d, ", a) ; else break ; fi ; n := n+1 : od: - _R. J. Mathar (mathar(AT)strw.leidenuniv.nl), _, Jun 26 2007

EXTENSIONS

More terms from _R. J. Mathar (mathar(AT)strw.leidenuniv.nl), _, Jun 26 2007

Discussion
Fri Mar 30
17:38
OEIS Server: https://oeis.org/edit/global/190
#7 by Russ Cox at Sun Jul 10 18:39:23 EDT 2011
LINKS

<a href="/Sindx_index/Per.html#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

Discussion
Sun Jul 10
18:39
OEIS Server: https://oeis.org/edit/global/66
#6 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010
LINKS

<a href="/Sindx_Per.html#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

KEYWORD

easy,nonn,new

#5 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009
LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_Per.html#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a>

KEYWORD

easy,nonn,new

#4 by N. J. A. Sloane at Sun Jun 29 03:00:00 EDT 2008
MAPLE

Digits := 30 : A035513 := proc(n, k) local tau ; tau := (sqrt(5)+1)/2 ; combinat[fibonacci](k+1)*floor(n*tau)+(n-1)*combinat[fibonacci](k) ; end: A035513flat := proc(N) local r, c, k, np, n ; n := 1 : k := 1 : for np from 2 to N do n := n+1 : k := k-1 : if k = 0 then k := n: n := 1: fi ; od ; A035513(n, k) ; end: a035513 := [] : a := -1 : nmax := 300 : for n from 1 to nmax do a035513 := [op(a035513), A035513flat(n)] : od : printf("0, ") ; n := 1: while true do if member(n, a035513, 'a') then printf("%d, ", a) ; else break ; fi ; n := n+1 : od: - Richard R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 26 2007

KEYWORD

easy,nonn,new

EXTENSIONS

More terms from Richard R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 26 2007

#3 by N. J. A. Sloane at Sat Nov 10 03:00:00 EST 2007
DATA

0, 1, 2, 4, 3, 7, 6, 5, 11, 10, 9, 8, 15, 16, 21, 14, 13, 28, 12, 36, 20, 22, 45, 27, 19, 55, 18, 66, 35, 17, 78, 44, 26, 91, 29, 105, 54, 34, 120, 25, 136, 65, 24, 153, 77, 43, 171, 23, 190, 90, 53, 210, 33, 231, 104, 37, 253, 119, 64, 276, 42, 300, 135, 32

MAPLE

Digits := 30 : A035513 := proc(n, k) local tau ; tau := (sqrt(5)+1)/2 ; combinat[fibonacci](k+1)*floor(n*tau)+(n-1)*combinat[fibonacci](k) ; end: A035513flat := proc(N) local r, c, k, np, n ; n := 1 : k := 1 : for np from 2 to N do n := n+1 : k := k-1 : if k = 0 then k := n: n := 1: fi ; od ; A035513(n, k) ; end: a035513 := [] : a := -1 : nmax := 300 : for n from 1 to nmax do a035513 := [op(a035513), A035513flat(n)] : od : printf("0, ") ; n := 1: while true do if member(n, a035513, 'a') then printf("%d, ", a) ; else break ; fi ; n := n+1 : od: - Richard J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 26 2007

KEYWORD

easy,nonn,more,new

EXTENSIONS

More terms from Richard J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 26 2007

#2 by N. J. A. Sloane at Tue Jan 24 03:00:00 EST 2006
KEYWORD

easy,nonn,newmore