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 A226820 #3 Jun 19 2013 02:27:11
%S A226820 2,3,5,9,10,12,16,17,24,33,40,65,66,68,72,80,96,128,129,136,192,257,
%T A226820 264,320,513,514,516,520,528,544,576,640,768,1024,1025,1032,1088,1536,
%U A226820 2049,2056,2112,2560,4097,4098,4100,4104,4112,4128,4160,4224,4352,4608
%N A226820 Numbers of the form 2^j + 8^k, for j and k >= 0.
%H A226820 T. D. Noe, <a href="/A226820/b226820.txt">Table of n, a(n) for n = 1..10000</a>
%t A226820 a = 2; b = 8; mx = 5000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]
%Y A226820 Cf. A004050 (2^j + 3^k), A226806-A226832 (cases to 8^j + 9^k).
%K A226820 nonn
%O A226820 1,1
%A A226820 _T. D. Noe_, Jun 19 2013