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 A133220 #4 Mar 30 2012 18:49:09
%S A133220 1,125874,1035,1782,142857,1386,1359,113967,1089
%N A133220 a(n) is the smallest positive number k such that k and n*k are anagrams.
%e A133220 3*1035 = 3105 and this is the smallest such number.
%t A133220 Table[Select[Range[1000000], Sort[IntegerDigits[ # ]] == Sort[IntegerDigits[n# ]] &][[1]], {n, 9}]
%Y A133220 Cf. A023086, A023087, A023088, A023089, A023090, A023091, A023092, A023093.
%K A133220 base,fini,full,nonn
%O A133220 1,2
%A A133220 _Tanya Khovanova_, Oct 11 2007