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 A272655 #10 May 15 2016 11:30:21 %S A272655 11,22,33,44,55,66,77,88,99,1001,1010,1111,1212,1221,1313,1331,1414, %T A272655 1441,1515,1551,1616,1661,1717,1771,1818,1881,1919,1991,2002,2020, %U A272655 2112,2121,2222,2323,2332,2424,2442,2525,2552,2626,2662,2727,2772,2828,2882,2929,2992 %N A272655 Numbers whose decimal expansion is an abelian square. %C A272655 Decimal numbers of the form uv where the decimal digits of v are some permutation of the decimal digits of u. %H A272655 Chai Wah Wu, <a href="/A272655/b272655.txt">Table of n, a(n) for n = 1..10000</a> %e A272655 12344132 is a member because v = 4132 is a permutation of u = 1234. %o A272655 (Python) %o A272655 from sympy.utilities.iterables import multiset_permutations %o A272655 A272655_list = [int(str(n)+''.join(s)) for n in range(1,100) for s in multiset_permutations(sorted(str(n)))] # _Chai Wah Wu_, May 15 2016 %Y A272655 Cf. A272653, A272654. %K A272655 nonn,base %O A272655 1,1 %A A272655 _N. J. A. Sloane_, May 14 2016 %E A272655 More terms from _Chai Wah Wu_, May 15 2016