A157581 - OEIS

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

A157581 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`15`
`4`		`390`
`5`		`21010`
`6`		`1806015`
`7`		`123582921`
`8`		`7932838172`
`9`		`541388995092`
`10`		`35637846633315`
`11`		`2098170095389555`
`12`		`113237331813959034`
`13`		`5754386605886291022`
`14`		`280189305372079613419`
`15`		`13193562175797681608910`
`16`		`603200922513642478421880`

[1,15,390,21010,1806015,123582921,7932838172, 541388995092,35637846633315,2098170095389555, 113237331813959034,5754386605886291022, 280189305372079613419,13193562175797681608910, 603200922513642478421880]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)