A015557 - OEIS

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A015557 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`5`
`5`		`22`
`6`		`116`
`7`		`751`
`8`		`5629`
`9`		`47812`
`10`		`454000`
`11`		`4765191`
`12`		`54782415`
`13`		`684597511`
`14`		`9239952803`
`15`		`133952757202`
`16`		`2075907567337`
`17`		`34247231626810`
`18`		`599244998013964`
`19`		`11084682598687313`
`20`		`216127622080213322`

[1,1,1,2,5,22,116,751,5629,47812,454000,4765191, 54782415,684597511,9239952803,133952757202, 2075907567337,34247231626810,599244998013964, 11084682598687313,216127622080213322]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)