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 A226818 #5 Jun 19 2013 13:35:08
%S A226818 2,6,8,12,26,32,50,54,74,126,132,174,344,348,368,468,626,632,674,968,
%T A226818 2402,2406,2426,2526,3026,3126,3132,3174,3468,5526,15626,15632,15674,
%U A226818 15968,16808,16812,16832,16932,17432,18026,19932,32432,78126,78132,78174,78468
%N A226818 Numbers of the form 5^j + 7^k, for j and k >= 0.
%H A226818 T. D. Noe, <a href="/A226818/b226818.txt">Table of n, a(n) for n = 1..10000</a>
%t A226818 a = 5; b = 7; mx = 80000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]
%Y A226818 Cf. A004050 (2^j + 3^k), A226806-A226832 (cases to 8^j + 9^k).
%Y A226818 Cf. A226792 ((5^j + 7^k)/2).
%K A226818 nonn
%O A226818 1,1
%A A226818 _T. D. Noe_, Jun 19 2013