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 A265910 #11 Jun 08 2017 03:20:47 %S A265910 0,0,1,0,3,1,2,0,4,2,9,1,6,7,10,0,12,4,7,2,5,3,19,1,8,6,13,3,27,5,18, %T A265910 0,28,19,36,4,21,22,11,2,57,16,24,9,37,8,30,1,15,25,31,6,39,13,22,3, %U A265910 16,9,64,5,23,18,14,0,55,10,20,8,46,12,58,4,25,21,17,7,73,11,26,2,40 %N A265910 Zero-based column index to array A265345. %H A265910 Antti Karttunen, <a href="/A265910/b265910.txt">Table of n, a(n) for n = 1..6561</a> %H A265910 Indranil Ghosh, <a href="/A265910/a265910.txt">Python program to generate the sequence</a> %F A265910 a(2n+1) = A265354(n), a(2n) = a(A265352(n)). %o A265910 (Scheme, with memoization-macro definec) %o A265910 (definec (A265910 n) (if (odd? n) (A265354 (/ (- n 1) 2)) (A265910 (A265352 (/ n 2))))) %Y A265910 One less than A265911. %Y A265910 Cf. A265345, A265352, A265354 (compare the scatter-plot). %K A265910 nonn,look %O A265910 1,5 %A A265910 _Antti Karttunen_, Dec 18 2015