A001392 - OEIS

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

A001392 as a simple table

`n`		`a(n)`
`4`		`1`
`5`		`9`
`6`		`54`
`7`		`273`
`8`		`1260`
`9`		`5508`
`10`		`23256`
`11`		`95931`
`12`		`389367`
`13`		`1562275`
`14`		`6216210`
`15`		`24582285`
`16`		`96768360`
`17`		`379629720`
`18`		`1485507600`
`19`		`5801732460`
`20`		`22626756594`
`21`		`88152205554`
`22`		`343176898988`
`23`		`1335293573130`
`24`		`5193831553416`
`25`		`20198233818840`
`26`		`78542105700240`
`27`		`305417807763705`

[1,9,54,273,1260,5508,23256,95931,389367,1562275, 6216210,24582285,96768360,379629720,1485507600, 5801732460,22626756594,88152205554,343176898988, 1335293573130,5193831553416,20198233818840, 78542105700240,305417807763705]

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 7 11:47 EDT 2024. Contains 372302 sequences. (Running on oeis4.)