A026980 a(n) = Sum_{k=0..n} (k+1) * A026659(n,k).

1, 3, 8, 25, 60, 147, 336, 882, 1960, 4631, 10104, 25207, 54292, 125895, 268576, 653191, 1383228, 3172981, 6679960, 15996204, 33515856, 76350225, 159339600, 377580850, 785368168, 1780545051, 3692982328, 8684805392, 17968562880

Offset

0,2

Links

Table of n, a(n) for n=0..28.

Crossrefs

Sequence in context: A057420 A076049 A026970 * A026955 A093900 A018789

Adjacent sequences: A026977 A026978 A026979 * A026981 A026982 A026983

Keyword

nonn

Author

Clark Kimberling

Status

approved