A218101 - OEIS

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A218101 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`0`
`3`		`0`
`4`		`20`
`5`		`252`
`6`		`0`
`7`		`0`
`8`		`40116600`
`9`		`9075135300`
`10`		`0`
`11`		`0`
`12`		`7219428434016265740`
`13`		`27217014869199032015600`
`14`		`0`
`15`		`0`
`16`		`96614908840363322603893139521372656`
`17`		`5949105755928259715106809205795376486500`
`18`		`0`
`19`		`0`
`20`		`90717484605833107953850163563674201296374152790550788800`
`21`		`90492479540310008180848641429024900729436748166512078795479440`
`22`		`0`
`23`		`0`

[1,0,0,20,252,0,0,40116600,9075135300,0,0, 7219428434016265740,27217014869199032015600,0,0, 96614908840363322603893139521372656, 5949105755928259715106809205795376486500,0,0, 90717484605833107953850163563674201296374152790550\ 788800, 90492479540310008180848641429024900729436748166512\ 078795479440,0,0]

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Last modified September 7 20:21 EDT 2024. Contains 375749 sequences. (Running on oeis4.)