A143388 - OEIS

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A143388 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`8`
`3`		`40`
`4`		`221`
`5`		`1288`
`6`		`7752`
`7`		`47652`
`8`		`297275`
`9`		`1874730`
`10`		`11920740`
`11`		`76292736`
`12`		`490828828`
`13`		`3171317360`
`14`		`20563942288`
`15`		`133749903324`
`16`		`872196460359`
`17`		`5700580759510`
`18`		`37332393806400`
`19`		`244914161562840`
`20`		`1609234420792845`

[1,2,8,40,221,1288,7752,47652,297275,1874730, 11920740,76292736,490828828,3171317360, 20563942288,133749903324,872196460359, 5700580759510,37332393806400,244914161562840, 1609234420792845]

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Last modified April 16 03:28 EDT 2024. Contains 371696 sequences. (Running on oeis4.)