A000309 - OEIS

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

A000309 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`24`
`4`		`176`
`5`		`1456`
`6`		`13056`
`7`		`124032`
`8`		`1230592`
`9`		`12629760`
`10`		`133186560`
`11`		`1436098560`
`12`		`15774990336`
`13`		`176028860416`
`14`		`1990947110912`
`15`		`22783499599872`
`16`		`263411369705472`
`17`		`3073132646563840`
`18`		`36143187370967040`
`19`		`428157758086840320`
`20`		`5105072641718353920`
`21`		`61228492804372561920`

[1,1,4,24,176,1456,13056,124032,1230592,12629760, 133186560,1436098560,15774990336,176028860416, 1990947110912,22783499599872,263411369705472, 3073132646563840,36143187370967040, 428157758086840320,5105072641718353920, 61228492804372561920]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 20 00:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)