A226830 Numbers of the form 6^j + 9^k, for j and k >= 0.

2, 7, 10, 15, 37, 45, 82, 87, 117, 217, 225, 297, 730, 735, 765, 945, 1297, 1305, 1377, 2025, 6562, 6567, 6597, 6777, 7777, 7785, 7857, 8505, 14337, 46657, 46665, 46737, 47385, 53217, 59050, 59055, 59085, 59265, 60345, 66825, 105705, 279937, 279945, 280017

Offset: 1

Author

T. D. Noe, Jun 19 2013

Keywords

• nonn

Links

• T. D. Noe, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A004050 (2^j + 3^k), A226806-A226832 (cases to 8^j + 9^k).

Programs

Mathematica

a = 6; b = 9; mx = 300000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]