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 A118845 #12 Feb 13 2021 01:14:19 %S A118845 13,19,21,25,26,29,31,37,38,39,41,42,47,49,50,52,53,55,57,58,59,61,62, %T A118845 63,69,71,73,74,75,76,78,79,81,82,84,87,89,91,93,94,95,97,98,100,101, %U A118845 103,104,105,106,107,109,110,111,113,114,115,116,117,118,121,122,123 %N A118845 Numbers that have non-Brauer chains among their shortest addition chains. %C A118845 Indices of nonzero terms in A079302. See A079301 for the definition of a Brauer addition chain. %H A118845 Giovanni Resta, <a href="http://www.numbersaplenty.com/ac/">Tables of Shortest Addition Chains</a>, computed by David W. Wilson. %Y A118845 Cf. A118846 (corresponding counts of minimal non-Brauer chains), A079301 (number of minimal Brauer chains for n), A079302 (number of minimal non-Brauer chains for n), A118844 (numbers without shortest non-Brauer chains). %K A118845 nonn %O A118845 1,1 %A A118845 _Hugo Pfoertner_, May 01 2006