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 A191381 #10 Aug 11 2016 05:49:08 %S A191381 1,2,3,4,6,7,8,11,12,16,21,26,30,31,34,35,36,39,40,41,43,44,45,46,48, %T A191381 49,50,53,54,55,58,59,63,68,73,77,78,81,82,83,85,86,87,88,90,91,92,93, %U A191381 95,96,97,100,101,105,110,115,119,120,123,124,125,128,129,130,132,133,134,135,137,138,139,142,143,144,147,148,152,157,161,162 %N A191381 Positions of 1 in A191340. %C A191381 See A191340. %H A191381 Ivan Neretin, <a href="/A191381/b191381.txt">Table of n, a(n) for n = 1..10000</a> %t A191381 (See A191340.) %Y A191381 Cf. A191340. %Y A191381 Cf. A191380, A191382 (positions of 0 and 2 in the same). %K A191381 nonn %O A191381 1,2 %A A191381 _Clark Kimberling_, Jun 01 2011