A026995 a(n) = Sum_{k=0..n} (k+1) * A026692(n, k).

1, 3, 8, 20, 54, 147, 368, 873, 2150, 5401, 12948, 29952, 71386, 173370, 406720, 928013, 2173248, 5178906, 11994740, 27138972, 62859236, 147973950, 339831168, 764579850, 1757600988, 4102109109, 9364407584, 20984799649

Offset

0,2

Links

Table of n, a(n) for n=0..27.

Crossrefs

Sequence in context: A305823 A333679 A230953 * A018035 A271843 A122228

Adjacent sequences: A026992 A026993 A026994 * A026996 A026997 A026998

Keyword

nonn

Author

Clark Kimberling

Status

approved