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 A065571 #5 Aug 15 2016 12:25:15 %S A065571 0,11,22,33,44,55,66,77,88,99,101,110,112,121,123,132,134,139,143,145, %T A065571 148,154,156,157,165,166,167,175,176,178,184,187,189,193,198,202,209, %U A065571 211,213,220,224,231,235,242,246,249,253,257,258,264,267,268,275,276 %N A065571 Numbers whose decimal digits can be permuted to give a multiple of 11. %C A065571 a(k) = A064544(k) for k <= 263, a(263) = 1111. But the digits of the next biquam 1113 cannot be arranged to a multiple of 11. So we have a subset of those biquams, whose separating sets differ at most by 1 in size. %t A065571 Select[Range[0,300],AnyTrue[FromDigits/@Permutations[ IntegerDigits[ #]], Divisible[ #,11]&]&] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Aug 15 2016 *) %K A065571 nonn,base %O A065571 0,2 %A A065571 _Reinhard Zumkeller_, Dec 02 2001