A025225 - OEIS

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A025225 as a simple table

`n`		`a(n)`
`1`		`2`
`2`		`4`
`3`		`16`
`4`		`80`
`5`		`448`
`6`		`2688`
`7`		`16896`
`8`		`109824`
`9`		`732160`
`10`		`4978688`
`11`		`34398208`
`12`		`240787456`
`13`		`1704034304`
`14`		`12171673600`
`15`		`87636049920`
`16`		`635361361920`
`17`		`4634400522240`
`18`		`33985603829760`
`19`		`250420238745600`
`20`		`1853109766717440`
`21`		`13765958267043840`
`22`		`102618961627054080`
`23`		`767411365211013120`

[2,4,16,80,448,2688,16896,109824,732160,4978688, 34398208,240787456,1704034304,12171673600, 87636049920,635361361920,4634400522240, 33985603829760,250420238745600,1853109766717440, 13765958267043840,102618961627054080, 767411365211013120]

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Last modified April 24 13:30 EDT 2024. Contains 371957 sequences. (Running on oeis4.)