A028550 - OEIS

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A028550 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`4920`
`4`		`89955`
`5`		`977769`
`6`		`7670445`
`7`		`48447405`
`8`		`260865495`
`9`		`1241931125`
`10`		`5354625996`
`11`		`21268009665`
`12`		`78809488530`
`13`		`275102649810`
`14`		`911548565730`
`15`		`2884607044338`
`16`		`8761626447030`
`17`		`25649311876605`
`18`		`72623115075205`
`19`		`199467098107110`
`20`		`532810313084637`
`21`		`1387200530781195`

[1,0,0,4920,89955,977769,7670445,48447405, 260865495,1241931125,5354625996,21268009665, 78809488530,275102649810,911548565730, 2884607044338,8761626447030,25649311876605, 72623115075205,199467098107110,532810313084637, 1387200530781195]

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Last modified May 20 19:00 EDT 2024. Contains 372720 sequences. (Running on oeis4.)