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 A265579 #13 Dec 21 2015 03:58:24 %S A265579 0,1,2,3,1,4,2,5,6,0,7,6,3,7,4,5,3,8,6,9,0,8,7,10,2,11,10,9,11,12,0, %T A265579 11,13,8,9,13,0,14,5,12,1,15,2,16,10,12,4,13,1,10,5,13,12,8,14,17,1, %U A265579 18,4,14,15,3,16,19,1,20,2,17,15,16,4,19,3,18,5,15 %N A265579 a(n) = A260643(n) - 1. %C A265579 Analogous to A260643 but with nonnegative integers instead of positive integers. %H A265579 Peter Kagey, <a href="/A265579/b265579.txt">Table of n, a(n) for n = 1..10000</a> %F A265579 a(n) = A260643(n) - 1. %Y A265579 Cf. A260643. %K A265579 nonn %O A265579 1,3 %A A265579 _Peter Kagey_, Dec 10 2015