A100647 Numerator of Cotesian number C(n,3).

1, 16, 25, 34, 2989, 5248, 1209, 5675, 560593, 893128, 11148172711, 109420087, 349259195, 83221185536, 17347403755459, 161769065751, 26070191142124243, 4137435748625, 1745702310941533, 1389851895548897, 936428641553074799449741, 748157499921069376

Offset: 3

Author

N. J. A. Sloane, Dec 05 2004

Keywords

• nonn
• frac

Examples

			1/8, 16/45, 25/144, 34/105, 2989/17280, 5248/14175, 1209/5600, 5675/12474, 560593/1935360, 893128/1576575, 11148172711/28740096000, 109420087/156370500, ... = A100627/A100628
		

References

• Charles Jordan, Calculus of Finite Differences, Chelsea 1965, p. 513.

Crossrefs

See A002176 for further references. A diagonal of A100640/A100641.