A226794 - OEIS

A226794

Numbers of the form (5^j + 9^k)/2, for j and k >= 0.

1, 3, 5, 7, 13, 17, 41, 43, 53, 63, 67, 103, 313, 317, 353, 365, 367, 377, 427, 677, 1563, 1567, 1603, 1927, 3281, 3283, 3293, 3343, 3593, 4843, 7813, 7817, 7853, 8177, 11093, 29525, 29527, 29537, 29587, 29837, 31087, 37337, 39063, 39067, 39103

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

a = 5; b = 9; mx = 80000; Union[Flatten[Table[a^n + b^m, {m, 0, Log[b, mx]}, {n, 0, Log[a, mx - b^m]}]]]/2

CROSSREFS

Cf. A226829 (5^j + 9^k).

Sequence in context: A066464 A062324 A194829 * A300748 A173641 A153645

Adjacent sequences: A226791 A226792 A226793 * A226795 A226796 A226797

KEYWORD

nonn

AUTHOR

T. D. Noe, Jun 19 2013

STATUS

approved