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 A059808 #7 Aug 03 2015 06:22:44
%S A059808 7,9,11,13,15,16,17,19,21,22,23,25,26,27,28,29,30,31,33,34,35,36,37,
%T A059808 38,39,40,41,42,43,44,45,46,47,49,50,51,52,53,54,55,56,57,58,59,61,62,
%U A059808 63,64,65,66,67,68,69,70,71,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87
%N A059808 Numbers which contain the same digits in two different bases.
%e A059808 13 can be written as 12 (in base 11) or 21 (in base 6)
%o A059808 (PARI) isok(n) = {for (b=3, n, db = vecsort(digits(n, b)); for (c = 2, b-1, dc = vecsort(digits(n, c)); if (dc == db, return (1));););} \\ _Michel Marcus_, Aug 03 2015
%Y A059808 Cf. A059809.
%K A059808 base,nonn
%O A059808 1,1
%A A059808 _Erich Friedman_, Feb 24 2001