A027308 a(n) = self-convolution of row n of array T given by A026323.

0, 3, 19, 126, 782, 4720, 28158, 167076, 988976, 5848884, 34587791, 204607678, 1211072430, 7173288330, 42519596826, 252225457356, 1497318796416, 8895212879140, 52881434260371, 314587526985030, 1872652395544866, 11154143632096962, 66476020466258370

Offset

1,2

Links

Table of n, a(n) for n=1..23.

Crossrefs

Sequence in context: A352299 A074572 A157455 * A295371 A156069 A058860

Adjacent sequences: A027305 A027306 A027307 * A027309 A027310 A027311

Keyword

nonn

Author

Clark Kimberling

Extensions

More terms from Sean A. Irvine, Oct 27 2019

Status

approved