A131497 - OEIS

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

A131497 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`15`
`4`		`56`
`5`		`213`
`6`		`813`
`7`		`3104`
`8`		`9632089`
`9`		`36787239`
`10`		`140499215`
`11`		`2049402728`
`12`		`7827156489`
`13`		`29893772401`
`14`		`6360445726168`
`15`		`24292055125871`
`16`		`354337952833519`
`17`		`5168578128432327`
`18`		`19740029272114749`
`19`		`4200051540382303047`
`20`		`16040995858310522148`
`21`		`233983234616956426935`
`22`		`893637628328498285466`
`23`		`3413014663516027432461`

[1,4,15,56,213,813,3104,9632089,36787239, 140499215,2049402728,7827156489,29893772401, 6360445726168,24292055125871,354337952833519, 5168578128432327,19740029272114749, 4200051540382303047,16040995858310522148, 233983234616956426935,893637628328498285466, 3413014663516027432461]

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 24 13:41 EDT 2024. Contains 371957 sequences. (Running on oeis4.)