A000774 - OEIS

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A000774 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`5`
`3`		`17`
`4`		`74`
`5`		`394`
`6`		`2484`
`7`		`18108`
`8`		`149904`
`9`		`1389456`
`10`		`14257440`
`11`		`160460640`
`12`		`1965444480`
`13`		`26029779840`
`14`		`370643938560`
`15`		`5646837369600`
`16`		`91657072281600`
`17`		`1579093018675200`
`18`		`28779361764249600`
`19`		`553210247226470400`
`20`		`11185850044938240000`
`21`		`237335752951879680000`

[1,2,5,17,74,394,2484,18108,149904,1389456, 14257440,160460640,1965444480,26029779840, 370643938560,5646837369600,91657072281600, 1579093018675200,28779361764249600, 553210247226470400,11185850044938240000, 237335752951879680000]

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Last modified May 15 16:38 EDT 2024. Contains 372548 sequences. (Running on oeis4.)