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 A249648 #4 Nov 03 2014 12:52:54 %S A249648 0,10,19,27,34,40,45,49,52,54,55,72,80,87,93,98,102,105,107,108,109, %T A249648 118,126,133,139,144,148,151,153,154,176,183,189,194,198,201,203,204, %U A249648 205,213,221,222,229,235,240,244,247,249,257,276,282,287,291,294,296 %N A249648 Positions of terms in A249626, having a zero in their decimal representation. %C A249648 A168046(A249626(a(n))) = 0. %H A249648 Reinhard Zumkeller, <a href="/A249648/b249648.txt">Table of n, a(n) for n = 1..10000</a> %e A249648 . n | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 %e A249648 . A249248 | 0 10 19 27 34 40 45 49 52 54 55 72 80 87 93 98 102 105 %e A249648 . A249626 | 0 10 20 30 40 50 60 70 80 90 100 101 102 103 104 105 106 107 . %o A249648 (Haskell) %o A249648 a249648 = fromJust . (`elemIndex` a249626_list) . a011540 %Y A249648 Cf. A011540, A168046, A249626. %K A249648 nonn,base %O A249648 1,2 %A A249648 _Reinhard Zumkeller_, Nov 03 2014