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 A136769 #5 Aug 03 2013 03:56:14 %S A136769 4,9,20,25,30,41,62,83,84,89,94,105,110,115,126,147,168,169,190,211, %T A136769 222,227,232,243,248,253,254,275,296,307,312,317,328,333,338,339,340, %U A136769 345,350,361,366,371,382,403,424,425,430,435,446,451,456,467,488,509,510 %N A136769 n! never ends in this many 0's in base 8. %Y A136769 Cf. A000142, A136759, A136695. %Y A136769 Cf. A000966, A055938, A096346, A136767, A136768, A136770, A136771, A136772, A136773, A136774. %K A136769 base,nonn %O A136769 1,1 %A A136769 _Carl R. White_, Jan 21 2008