A018927 - OEIS

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A018927 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`1`
`3`		`7`
`4`		`45`
`5`		`313`
`6`		`2421`
`7`		`20833`
`8`		`198309`
`9`		`2073793`
`10`		`23664021`
`11`		`292834513`
`12`		`3907994949`
`13`		`55967406433`
`14`		`856355084661`
`15`		`13944569166193`
`16`		`240803714700069`
`17`		`4395998055854593`
`18`		`84596337986326101`
`19`		`1711691067680320273`
`20`		`36329581765125539589`
`21`		`807099012174816776353`

[0,1,7,45,313,2421,20833,198309,2073793,23664021, 292834513,3907994949,55967406433,856355084661, 13944569166193,240803714700069,4395998055854593, 84596337986326101,1711691067680320273, 36329581765125539589,807099012174816776353]

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Last modified April 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)