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 A171889 #15 Jul 16 2019 15:08:47 %S A171889 0,1,2,2,5,2,5,3,4,6,5,6,3,3,5,4,3,4,3,6,9,3,5,3,6,3,4,5,6,5,4,4,5,4, %T A171889 4,6,4,4,6,6,5,6,4,4,9,3,3,6,4,3,10,3,4,4,6,4,5,3,3,6,6,7,3,5,4,5,4,6, %U A171889 6,6,5,4,6,4,4,6,4,5,4,7,3,4,5,4,8,10,3,5,5,6,3,8,4,4,6,7,6,6,10,4,4,8,3,4 %N A171889 a(n) = number immediately following n-th 0 in A181391. %C A171889 This is associated with conjecture (ii) in A181391 (van Eck's sequence). - _Po-chia Chen_, Jun 20 2019 %H A171889 N. J. A. Sloane, <a href="/A171889/b171889.txt">Table of n, a(n) for n = 1..15099</a>. %Y A171889 Cf. A181391. %K A171889 nonn %O A171889 1,3 %A A171889 _N. J. A. Sloane_, Oct 18 2010