A189238 - OEIS

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A189238 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`28`
`5`		`120`
`6`		`726`
`7`		`4424`
`8`		`31928`
`9`		`249984`
`10`		`2131690`
`11`		`20027392`
`12`		`199240020`
`13`		`2162269824`
`14`		`24676708798`
`15`		`302660939520`
`16`		`3897794538864`
`17`		`53264941301760`
`18`		`763279034957010`
`19`		`11499327153704960`
`20`		`181271619624350860`

[1,2,6,28,120,726,4424,31928,249984,2131690, 20027392,199240020,2162269824,24676708798, 302660939520,3897794538864,53264941301760, 763279034957010,11499327153704960, 181271619624350860]

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Last modified May 23 16:39 EDT 2022. Contains 353977 sequences. (Running on oeis4.)