A222270 - OEIS

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A222270 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`4`
`4`		`13`
`5`		`40`
`6`		`162`
`7`		`888`
`8`		`3617`
`9`		`18136`
`10`		`81560`
`11`		`407644`
`12`		`1901375`
`13`		`9349056`
`14`		`44712494`
`15`		`218395880`
`16`		`1057844425`
`17`		`5154076928`
`18`		`25146813236`
`19`		`122532346416`
`20`		`600293886818`
`21`		`2928771248408`
`22`		`14383619678744`
`23`		`70298507431888`
`24`		`345790800489643`

[0,0,4,13,40,162,888,3617,18136,81560,407644, 1901375,9349056,44712494,218395880,1057844425, 5154076928,25146813236,122532346416,600293886818, 2928771248408,14383619678744,70298507431888, 345790800489643]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)