A268888 - OEIS

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A268888 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`20`
`3`		`84`
`4`		`501`
`5`		`2190`
`6`		`9996`
`7`		`42362`
`8`		`178400`
`9`		`732378`
`10`		`2974934`
`11`		`11933578`
`12`		`47466417`
`13`		`187325260`
`14`		`734639334`
`15`		`2865135348`
`16`		`11121381104`
`17`		`42989239524`
`18`		`165564387000`
`19`		`635557701344`
`20`		`2432620417837`
`21`		`9286486715514`
`22`		`35366757558512`
`23`		`134400104565934`

[0,20,84,501,2190,9996,42362,178400,732378, 2974934,11933578,47466417,187325260,734639334, 2865135348,11121381104,42989239524,165564387000, 635557701344,2432620417837,9286486715514, 35366757558512,134400104565934]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)