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 A253723 #36 Dec 18 2015 11:39:55 %S A253723 2,4,5,7,8,9,11,12,13,14,15,17,18,19,20,22,23,24,25,26,27,28,30,31,32, %T A253723 33,34,35,36,38 %N A253723 Length of shortest addition chain corresponding to maximum of A003313(k)/log_2(k) in interval 2^n < k < 2^(n+1). %C A253723 The values of k, for which the maximum values are obtained, are given in A264803. %Y A253723 Cf. A003313, A264803. %K A253723 nonn,more %O A253723 1,1 %A A253723 _Hugo Pfoertner_, Dec 18 2015