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 A228051 #4 Aug 06 2013 18:44:04 %S A228051 0,1,2,3,4,5,6,7,21355040,21355041,21355042,21355043,21355044, %T A228051 21355045,21355046,21355047,5406016340533523126,5406016341275264235, %U A228051 5406016341324744317,5406016341324744320,5406016341325061711,5406016341325061712,5406016342066514511 %N A228051 The decimal representation of n is a substring of its base 8 representation. %H A228051 Giovanni Resta, <a href="/A228051/b228051.txt">Table of n, a(n) for n = 1..169</a> (terms < 10^35) %e A228051 5406016340533523126 = (454060163405335231266)_8. %Y A228051 Cf. A038102-A038106, A228050, A228052, A227549. %K A228051 nonn,base %O A228051 1,3 %A A228051 _Giovanni Resta_, Aug 06 2013