A189839 - OEIS

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A189839 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`20`
`5`		`80`
`6`		`384`
`7`		`2112`
`8`		`12992`
`9`		`94272`
`10`		`716800`
`11`		`6141440`
`12`		`58451568`
`13`		`596647568`
`14`		`6555879072`
`15`		`77766001056`
`16`		`981202169600`

[1,2,6,20,80,384,2112,12992,94272,716800,6141440, 58451568,596647568,6555879072,77766001056, 981202169600]

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Last modified June 4 02:16 EDT 2024. Contains 373089 sequences. (Running on oeis4.)