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A226793 Numbers of the form (3^j + 9^k)/2, for j and k >= 0. 1
1, 2, 5, 6, 9, 14, 18, 41, 42, 45, 54, 81, 122, 126, 162, 365, 366, 369, 378, 405, 486, 729, 1094, 1098, 1134, 1458, 3281, 3282, 3285, 3294, 3321, 3402, 3645, 4374, 6561, 9842, 9846, 9882, 10206, 13122, 29525, 29526, 29529, 29538, 29565, 29646, 29889 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..47.

MATHEMATICA

a = 3; b = 9; mx = 60000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]/2

CROSSREFS

Cf. A226827 (3^j + 9^k).

Sequence in context: A193978 A224486 A163782 * A255747 A256264 A256249

Adjacent sequences:  A226790 A226791 A226792 * A226794 A226795 A226796

KEYWORD

nonn

AUTHOR

T. D. Noe, Jun 19 2013

STATUS

approved

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Last modified March 1 02:43 EST 2021. Contains 341732 sequences. (Running on oeis4.)