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 A254110 #5 Feb 06 2015 02:48:52 %S A254110 0,1,0,0,2,1,0,0,1,0,0,3,2,1,0,0,1,0,0,2,1,0,0,1,0,0,4,3,2,1,0,0,1,0, %T A254110 0,2,1,0,0,1,0,0,3,2,1,0,0,1,0,0,2,1,0,0,1,0,0,5,4,3,2,1,0,0,1,0,0,2, %U A254110 1,0,0,1,0,0,3,2,1,0,0,1,0,0,2,1,0,0,1,0,0,4,3,2,1,0,0,1,0,0,2,1,0,0,1,0,0,3,2,1,0,0,1,0,0,2,1,0,0,1,0,0,6,5,4,3,2,1,0,0 %N A254110 Zero-based column index of n in A254105: if A234017(n) = 0, then a(n) = 0, otherwise a(n) = 1 + a(A234017(n)). %H A254110 Antti Karttunen, <a href="/A254110/b254110.txt">Table of n, a(n) for n = 1..8192</a> %F A254110 If A234017(n) = 0, then a(n) = 0, otherwise a(n) = 1 + a(A234017(n)). %o A254110 (Scheme, with memoizing macro definec) %o A254110 (definec (A254110 n) (if (zero? (A234017 n)) 0 (+ 1 (A254110 (A234017 n))))) %Y A254110 One less than A254111. %Y A254110 Cf. A234017, A254105, A254107. %K A254110 nonn %O A254110 1,5 %A A254110 _Antti Karttunen_, Jan 27 2015