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 A181128 #3 Mar 30 2012 17:22:57
%S A181128 0,511,19171,19682,242461,261632,262143,1690981,1933442,1952613,
%T A181128 1953124,8124571,9815552,10058013,10077184,10077695,30275911,38400482,
%U A181128 40091463,40333924,40353095,40353606,93864121,124140032,132264603,133955584
%N A181128 Difference of two positive 9th powers.
%C A181128 No term is a prime number.
%H A181128 T. D. Noe, <a href="/A181128/b181128.txt">Table of n, a(n) for n=1..1000</a>
%t A181128 nn=10^15; p=9; Union[Reap[Do[n=i^p-j^p; If[n<=nn, Sow[n]], {i,Ceiling[(nn/p)^(1/(p-1))]}, {j,i}]][[2,1]]]
%Y A181128 Cf. A024352 (squares), A181123 (cubes), A147857 (4th powers), A181124-A181127 (5th to 8th powers)
%K A181128 nonn
%O A181128 1,2
%A A181128 _T. D. Noe_, Oct 06 2010