A020056 - OEIS

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A020056 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`1`
`4`		`3`
`5`		`17`
`6`		`92`
`7`		`587`
`8`		`4323`
`9`		`36162`
`10`		`338610`
`11`		`3509239`
`12`		`39877720`
`13`		`493033634`
`14`		`6588722212`
`15`		`94638009963`
`16`		`1453983971264`
`17`		`23792464984330`
`18`		`413123710182463`
`19`		`7586453586987048`
`20`		`146901328548021942`
`21`		`2991445235886992290`

[1,0,0,1,3,17,92,587,4323,36162,338610,3509239, 39877720,493033634,6588722212,94638009963, 1453983971264,23792464984330,413123710182463, 7586453586987048,146901328548021942, 2991445235886992290]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)