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 A226825 #3 Jun 19 2013 02:28:01
%S A226825 2,8,9,15,50,57,65,71,113,344,351,407,513,519,561,855,2402,2409,2465,
%T A226825 2913,4097,4103,4145,4439,6497,16808,16815,16871,17319,20903,32769,
%U A226825 32775,32817,33111,35169,49575,117650,117657,117713,118161,121745,150417,262145
%N A226825 Numbers of the form 7^j + 8^k, for j and k >= 0.
%H A226825 T. D. Noe, <a href="/A226825/b226825.txt">Table of n, a(n) for n = 1..10000</a>
%t A226825 a = 7; b = 8; mx = 300000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]
%Y A226825 Cf. A004050 (2^j + 3^k), A226806-A226832 (cases to 8^j + 9^k).
%K A226825 nonn
%O A226825 1,1
%A A226825 _T. D. Noe_, Jun 19 2013