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 A191380 #8 Aug 11 2016 05:48:50 %S A191380 9,10,17,18,19,20,27,28,29,37,38,51,52,60,61,62,69,70,71,72,79,80,94, %T A191380 102,103,104,111,112,113,114,121,122,131,136,145,146,153,154,155,156, %U A191380 163,164,165,173,178,187,188,195,196,197,198,205,206,207,215,216,229,230,238,239,240,247,248,249,257,258,272,280,281,282,289,290 %N A191380 Positions of 0 in A191340. %C A191380 See A191340. %H A191380 Ivan Neretin, <a href="/A191380/b191380.txt">Table of n, a(n) for n = 1..10000</a> %t A191380 (See A191340.) %Y A191380 Cf. A191340. %Y A191380 Cf. A191381, A191382 (positions of 1 and 2 in the same). %K A191380 nonn %O A191380 1,1 %A A191380 _Clark Kimberling_, Jun 01 2011