A025578 a(n) = Sum{T(n,k-1), k = 1,2,...,n}.

1, 3, 8, 23, 67, 197, 582, 1725, 5124, 15245, 45412, 135401, 404015, 1206247, 3603230, 10767855, 32189931, 96259221, 287924196, 861415809, 2577711045, 7714933851, 23093949534, 69139301043, 207017139906, 619921659303, 1856572250112

Offset

1,2

Links

Table of n, a(n) for n=1..27.

Crossrefs

Sequence in context: A199841 A106606 A050535 * A038151 A230122 A199103

Adjacent sequences: A025575 A025576 A025577 * A025579 A025580 A025581

Keyword

nonn

Author

Clark Kimberling

Status

approved