A121987 - OEIS

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A121987 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`2`
`5`		`6`
`6`		`24`
`7`		`120`
`8`		`714`
`9`		`4963`
`10`		`39520`
`11`		`354609`
`12`		`3538960`
`13`		`38873978`
`14`		`466013508`
`15`		`6053565700`
`16`		`84700374374`
`17`		`1269922505955`
`18`		`20311303879168`
`19`		`345189255328973`
`20`		`6211881989182800`
`21`		`118001629266860074`
`22`		`2359626359259618140`

[1,1,1,1,2,6,24,120,714,4963,39520,354609,3538960, 38873978,466013508,6053565700,84700374374, 1269922505955,20311303879168,345189255328973, 6211881989182800,118001629266860074, 2359626359259618140]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)