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 A140665 #2 Mar 30 2012 17:38:09 %S A140665 0,1,2,3,4,5,6,7,8,9,10,20,23,24,25,26,27,28,29,30,32,36,37,38,39,40, %T A140665 42,45,46,47,48,49,50,51,54,58,59,60,62,64,67,68,69,70,73,76,80,83,84, %U A140665 86,89,90,91,92,93,94,95,98,128,144,146,148,161,168,170,173,177,180,185 %N A140665 Self-erasure surviving numbers, second version. See A108652 for the definition. %C A140665 The largest member that I've found is 402119190. %Y A140665 Cf. A108652. %K A140665 base,easy,fini,nonn %O A140665 1,3 %A A140665 _David Wasserman_, May 20 2008