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 A136291 #2 Mar 30 2012 17:26:27 %S A136291 0,2,3,4,6,12,14,16,20,22,23,26,34,35,36,39,42,46,54,64,74,83,168,0,2, %T A136291 3,4,6,7,8,10,11,14,19,27,28,34,40,50,55,84,0,2,4,8,12,20,0,0,0,2,3,4, %U A136291 7,16,22,24,39,0,2,3,4,6,7,8,26,0,2,4,6,8,10,16,28 %N A136291 Array read by rows: each row is a sequence of numbers k such that n^k does not contain the digit n. %C A136291 Last values in each row are 168,84,20,0,0,39,26,28 (all terms highly probably correct). %e A136291 Each row is sequence of numbers k such that n^k does not contain the digit n (all rows probably finite, checked up to k=10^4), n=2..9: %e A136291 0,2,3,4,6,12,14,16,20,22,23,26,34,35,36,39,42,46,54,64,74,83,168 (A034293) %e A136291 0,2,3,4,6,7,8,10,11,14,19,27,28,34,40,50,55,84 (A131629) %e A136291 0,2,4,8,12,20 %e A136291 0, %e A136291 0, %e A136291 0,2,3,4,7,16,22,24,39 %e A136291 0,2,3,4,6,7,8,26 %e A136291 0,2,4,6,8,10,16,28. %Y A136291 Cf. A034293, A131629. %K A136291 base,fini,full,nonn,tabf %O A136291 0,2 %A A136291 _Zak Seidov_, Mar 20 2008