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 A134609 #6 Apr 21 2013 09:15:12 %S A134609 256,588,693,3840,6561,17787,178360,313600,337365,350000,387072, %T A134609 390625,407442,432000,531674,535815,541310,664909,697851,1044582, %U A134609 1262056,1264640,1299272,1374327,1547570,1660360,1740024,2160756,2578968 %N A134609 Numbers such that the cube root of the sum of cubes of their prime factors is a nonprime integer. %C A134609 No prime number is a term. _Hieronymus Fischer_, Apr 20 2013 %H A134609 Hieronymus Fischer, <a href="/A134609/b134609.txt">Table of n, a(n) for n = 1..250</a> %e A134609 a(2)=588, since 588=2*2*3*7*7 and (2*2^3+3^3+2*7^3)^(1/3)=729^(1/3)=81. %Y A134609 Cf. A001597, A025475, A134333, A134344, A134376. %Y A134609 Cf. A134600, A134602, A134605, A134611, A134616, A134618, A134620. %K A134609 nonn %O A134609 1,1 %A A134609 _Hieronymus Fischer_, Nov 11 2007 %E A134609 Minor Edits by _Hieronymus Fischer_, Apr 20 2013