A047657 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A047657 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`16`
`3`		`224`
`4`		`4480`
`5`		`116480`
`6`		`3727360`
`7`		`141639680`
`8`		`6232145920`
`9`		`311607296000`
`10`		`17450008576000`
`11`		`1081900531712000`
`12`		`73569236156416000`
`13`		`5444123475574784000`
`14`		`435529878045982720000`
`15`		`37455569511954513920000`
`16`		`3445912395099815280640000`
`17`		`337699414719781897502720000`

[1,2,16,224,4480,116480,3727360,141639680, 6232145920,311607296000,17450008576000, 1081900531712000,73569236156416000, 5444123475574784000,435529878045982720000, 37455569511954513920000,3445912395099815280640000, 337699414719781897502720000]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 4 20:57 EDT 2024. Contains 372257 sequences. (Running on oeis4.)