A226791 Numbers of the form (3^j + 7^k)/2, for j and k >= 0.

1, 2, 4, 5, 8, 14, 17, 25, 26, 29, 38, 41, 44, 65, 122, 125, 146, 172, 173, 176, 185, 212, 293, 365, 368, 389, 536, 1094, 1097, 1118, 1201, 1202, 1205, 1214, 1241, 1265, 1322, 1565, 2294, 3281, 3284, 3305, 3452, 4481, 8404, 8405, 8408, 8417, 8444

Offset: 1

Author

T. D. Noe, Jun 19 2013

Keywords

• nonn

Crossrefs

Cf. A226816 (3^j + 7^k).

Programs

Mathematica

a = 3; b = 7; mx = 20000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]/2