The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A005282

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

A005282

Mian-Chowla sequence (a B_2 sequence): a(1) = 1; for n>1, a(n) = smallest number > a(n-1) such that the pairwise sums of elements are all distinct.
(history; published version)

#139 by Sean A. Irvine at Fri Aug 21 16:17:00 EDT 2026

LINKS

N. J. A. Sloane, <a href="/A001149/a001149_1.pdf">Handwritten notes on Self-Generating Sequences, 1970</a> (note that A1148 has now become A005282)

Discussion

Fri Aug 21

16:17

OEIS Server: https://oeis.org/edit/global/3139

#138 by Sean A. Irvine at Mon May 11 18:15:11 EDT 2026

STATUS

proposed

approved

#137 by Adam Reichert at Wed May 06 01:28:15 EDT 2026

STATUS

editing

proposed

#136 by Adam Reichert at Wed May 06 00:42:21 EDT 2026

LINKS

Adam Reichert, <a href="/A005282/a005282_12.txt">Table of n, a(n) for n = 1..42674100000</a>

Adam Reichert, <a href="/A005282/a005282_1.py.txt">Python</a>

Adam Reichert, <a href="/A005282/a005282_2.txt">Table of n, a(n) for n = 1..100000</a>

Adam Reichert, <a href="/A005282/a005282_1.py.txt">Python</a>

Discussion

Wed May 06

01:27

Adam Reichert: I'm updating my earlier entries. I improved the performance of the program by modifying one of the sorting options and experimenting with different window sizes, allowing additional terms to be computed. As a check, I also used Claude Code to create a second, independent implementation, and the results from the two programs agreed.

#135 by Adam Reichert at Wed May 06 00:41:12 EDT 2026

LINKS

Adam Reichert, <a href="/A005282/a005282_2.txt">Table of n, a(n) for n = 1..100000</a>

Adam Reichert, <a href="/A005282/a005282_1.py.txt">Python</a>

STATUS

approved

editing

#134 by OEIS Server at Fri Apr 17 00:53:41 EDT 2026

LINKS

Adam Reichert, <a href="/A005282/b005282_2.txt">Table of n, a(n) for n = 1..10000</a> (terms 1..5818 from T. D. Noe)

#133 by Sean A. Irvine at Fri Apr 17 00:53:41 EDT 2026

STATUS

proposed

approved

Discussion

Fri Apr 17

00:53

OEIS Server: Installed new b-file as b005282.txt.  Old b-file is now b005282_2.txt.

#132 by Sean A. Irvine at Mon Apr 13 21:30:27 EDT 2026

STATUS

editing

proposed

#131 by Sean A. Irvine at Mon Apr 13 21:29:57 EDT 2026

LINKS

Adam Reichert, <a href="/A005282/a005282_1.txt">Table of n, a(n) for n = 1..42674</a>

Adam Reichert, <a href="/A005282/a005282.py.txt">Python</a>

Adam Reichert, <a href="/A005282/a005282_1.txt">Table of n, a(n) for n = 1..42674</a>

Adam Reichert, <a href="/A005282/a005282.py.txt">Python</a>

STATUS

proposed

editing

#130 by Adam Reichert at Mon Apr 13 21:09:10 EDT 2026

STATUS

editing

proposed

Showing entries 1-10 | older changes