A027251 a(n) = Sum_{k=0..n} (k+1) * A026780(n, k).

1, 3, 10, 27, 76, 195, 519, 1299, 3364, 8311, 21191, 51981, 131273, 320715, 804845, 1961823, 4901782, 11932489, 29719325, 72291325, 179610365, 436699813, 1082870377, 2632116551, 6516122403, 15835522783, 39147779575

Offset

0,2

Links

Table of n, a(n) for n=0..26.

Crossrefs

Sequence in context: A000471 A000501 A154496 * A279136 A127912 A005956

Adjacent sequences: A027248 A027249 A027250 * A027252 A027253 A027254

Keyword

nonn

Author

Clark Kimberling

Status

approved