A117156 - OEIS

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A117156 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`23`
`5`		`110`
`6`		`630`
`7`		`4210`
`8`		`32150`
`9`		`276210`
`10`		`2636720`
`11`		`27687440`
`12`		`317169270`
`13`		`3936056080`
`14`		`52603684760`
`15`		`753241509900`
`16`		`11504852242400`
`17`		`186705357825800`
`18`		`3208160592252000`
`19`		`58188413286031600`
`20`		`1110946958902609400`

[1,1,2,6,23,110,630,4210,32150,276210,2636720, 27687440,317169270,3936056080,52603684760, 753241509900,11504852242400,186705357825800, 3208160592252000,58188413286031600, 1110946958902609400]

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)