The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A043061

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A043061

(s(n)+4)/7, where s(n)=n-th base 7 palindrome that starts with 3.
(history; published version)

#7 by Harvey P. Dale at Mon Apr 27 15:03:48 EDT 2020

STATUS

editing

approved

#6 by Harvey P. Dale at Mon Apr 27 15:03:45 EDT 2020

MATHEMATICA

b7p3Q[n_]:=Module[{idn7=IntegerDigits[n, 7]}, idn7[[1]]==3&&idn7 == Reverse[ idn7]]; (#+4)/7&/@Select[Range[10000], b7p3Q] (* Harvey P. Dale, Apr 27 2020 *)

STATUS

approved

editing

#5 by Charles R Greathouse IV at Thu Jul 12 00:39:46 EDT 2012

NAME

(s(n)+4)/7, where s(n)=nth n-th base 7 palindrome that starts with 3.

Discussion

Thu Jul 12

00:39

OEIS Server: https://oeis.org/edit/global/1814

#4 by Russ Cox at Fri Mar 30 18:56:33 EDT 2012

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

Clark Kimberling

Discussion

Fri Mar 30

18:56

OEIS Server: https://oeis.org/edit/global/285

#3 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

KEYWORD

nonn,base,new

AUTHOR

Clark Kimberling, (ck6(AT)evansville.edu)

#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

KEYWORD

nonn,base,new

AUTHOR

Clark Kimberling, ck6@cedar.(AT)evansville.edu

#1 by N. J. A. Sloane at Sat Dec 11 03:00:00 EST 1999

NAME

(s(n)+4)/7, where s(n)=nth base 7 palindrome that starts with 3.

DATA

1, 4, 22, 23, 24, 25, 26, 27, 28, 148, 156, 164, 172, 180, 188, 196, 1030, 1037, 1044, 1051, 1058, 1065, 1072, 1080, 1087, 1094, 1101, 1108, 1115, 1122, 1130, 1137, 1144, 1151, 1158, 1165, 1172, 1180, 1187, 1194, 1201, 1208

OFFSET

1,2

KEYWORD

nonn,base

AUTHOR

Clark Kimberling, [email protected]

STATUS

approved