This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A130446 #3 Nov 11 2010 07:34:06
%S A130446 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,
%T A130446 27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,
%U A130446 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72
%N A130446 Integers in [1, 425] expressible as a difference of the terms of the unique optimal Golomb ruler of order 24. See A130444.
%C A130446 This sequence has exactly 276 entries. The union of A130445 with this gives all integers in the range [1,425].
%H A130446 Joseph Biberstine (jrbibers(AT)indiana.edu), May 26 2007, <a href="/A130446/b130446.txt">Table of n, a(n) for n = 1..276</a>
%e A130446 a[5]-a[4] = 1. No other difference from the sequence gives 1.
%e A130446 a[10]-a[9] = 2. No other difference from the sequence gives 2.
%e A130446 a[5]-a[3] = 5. No other difference from the sequence gives 5.
%t A130446 A130444 = {0, 9, 33, 37, 38, 97, 122, 129, 140, 142, 152, 191, 205, 208, 252, 278, 286, 326, 332, 353, 368, 384, 403, 425}; Sort[(A130444[[ #[[1]]]] - A130444[[ #[[2]]]]) & /@ Select[Tuples[Range[24], 2], #[[1]] > #[[2]] &]]
%Y A130446 Cf. A130444: Main entry. A130445: Integers in [1, 425] not expressible as a difference from A130444.
%K A130446 fini,nonn
%O A130446 1,2
%A A130446 Joseph Biberstine (jrbibers(AT)indiana.edu), May 26 2007