The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A269967

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A269967

Indices of zeros in A269783.
(history; published version)

#11 by OEIS Server at Sun May 21 08:25:01 EDT 2023

LINKS

Rémy Sigrist, <a href="/A269967/b269967_1.txt">Table of n, a(n) for n = 1..10000</a>

#10 by Michael De Vlieger at Sun May 21 08:25:01 EDT 2023

STATUS

proposed

approved

Discussion

Sun May 21

08:25

OEIS Server: Installed first b-file as b269967.txt.

#9 by Rémy Sigrist at Sun May 21 07:47:11 EDT 2023

STATUS

editing

proposed

#8 by Rémy Sigrist at Sun May 21 07:46:45 EDT 2023

DATA

0, 1, 4, 7, 15, 23, 40, 55, 85, 111, 158, 197, 265, 323, 416, 493, 615, 719, 874, 1005, 1197, 1361, 1594, 1793, 2071, 2313, 2640, 2921, 3301, 3633, 4070, 4453, 4951, 5389, 5952, 6447, 7079, 7641, 8346, 8971, 9753, 10453, 11316, 12087, 13035, 13885, 14922

LINKS

Rémy Sigrist, <a href="/A269967/b269967_1.txt">Table of n, a(n) for n = 1..10000</a>

Rémy Sigrist, <a href="/A269967/a269967.txt">C++ program</a>

PROG

(C++) See Links section.

EXTENSIONS

More terms from Rémy Sigrist, May 21 2023

STATUS

approved

editing

Discussion

Sun May 21

07:47

Rémy Sigrist: added more terms + b-file + program

#7 by N. J. A. Sloane at Sat Feb 22 20:54:24 EST 2020

CROSSREFS

Cf. A269783 (main sequence), A269968 (index of first occurence occurrence of n), A269969 (index of first occurence occurrence of -n).

Discussion

Sat Feb 22

20:54

OEIS Server: https://oeis.org/edit/global/2851

#6 by N. J. A. Sloane at Fri Mar 11 06:24:01 EST 2016

STATUS

proposed

approved

#5 by M. F. Hasler at Wed Mar 09 10:02:16 EST 2016

STATUS

editing

proposed

#4 by M. F. Hasler at Wed Mar 09 10:01:23 EST 2016

CROSSREFS

Cf. A269783 (main sequence), A269968 (index of first occurence of n), A269969 (index of first occurence of -n).

STATUS

proposed

editing

#3 by M. F. Hasler at Tue Mar 08 15:39:24 EST 2016

STATUS

editing

proposed

#2 by M. F. Hasler at Tue Mar 08 15:35:03 EST 2016

NAME

allocated for M. F. Hasler

Indices of zeros in A269783.

DATA

OFFSET

1,3

COMMENTS

Sequence A269783 is defined by A269783(0)=0 and A269783(n+1) = A269783(n) + (-1)^(k+e)*floor(k/2), where k = #{ j<=n | A269783(j)=A269783(n) } and e=1 for A269783(n)>0, else e=0. That is, the 1st, 2nd, 3rd, 4th... occurrence of any positive integer n is followed by n resp. n-1 resp. n+1 resp. n-2, etc., and for zero or negative integers the same with opposite sign.

KEYWORD

allocated

nonn

AUTHOR

M. F. Hasler, Mar 08 2016

STATUS

approved

editing