A001887 - OEIS

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A001887 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`1`
`5`		`5`
`6`		`33`
`7`		`236`
`8`		`1918`
`9`		`17440`
`10`		`175649`
`11`		`1942171`
`12`		`23396353`
`13`		`305055960`
`14`		`4280721564`
`15`		`64330087888`
`16`		`1030831875953`
`17`		`17545848553729`
`18`		`316150872317105`
`19`		`6012076099604308`
`20`		`120330082937778554`

[1,0,0,0,1,5,33,236,1918,17440,175649,1942171, 23396353,305055960,4280721564,64330087888, 1030831875953,17545848553729,316150872317105, 6012076099604308,120330082937778554]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)