A020031 - OEIS

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A020031 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`8`
`5`		`38`
`6`		`210`
`7`		`1380`
`8`		`10450`
`9`		`89574`
`10`		`857352`
`11`		`9063435`
`12`		`104876887`
`13`		`1318452295`
`14`		`17893281148`
`15`		`260730668151`
`16`		`4059948975491`
`17`		`67279154450986`
`18`		`1182190856781603`
`19`		`21954973054515490`
`20`		`429690186924088871`

[1,1,1,2,8,38,210,1380,10450,89574,857352,9063435, 104876887,1318452295,17893281148,260730668151, 4059948975491,67279154450986,1182190856781603, 21954973054515490,429690186924088871]

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Last modified August 22 23:19 EDT 2024. Contains 375369 sequences. (Running on oeis4.)