A020070 - OEIS

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A020070 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`4`
`4`		`18`
`5`		`89`
`6`		`523`
`7`		`3598`
`8`		`28341`
`9`		`251531`
`10`		`2483877`
`11`		`27012163`
`12`		`320769440`
`13`		`4129906548`
`14`		`57302453360`
`15`		`852373993744`
`16`		`13531437150692`
`17`		`228343001917931`
`18`		`4081631159283027`
`19`		`77040788131467135`
`20`		`1531185664112909314`

[1,0,1,4,18,89,523,3598,28341,251531,2483877, 27012163,320769440,4129906548,57302453360, 852373993744,13531437150692,228343001917931, 4081631159283027,77040788131467135, 1531185664112909314]

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Last modified April 16 12:36 EDT 2024. Contains 371711 sequences. (Running on oeis4.)