A020025 - OEIS

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A020025 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`5`
`4`		`18`
`5`		`89`
`6`		`523`
`7`		`3599`
`8`		`28342`
`9`		`251532`
`10`		`2483877`
`11`		`27012163`
`12`		`320769441`
`13`		`4129906549`
`14`		`57302453361`
`15`		`852373993744`
`16`		`13531437150692`
`17`		`228343001917932`
`18`		`4081631159283027`
`19`		`77040788131467135`
`20`		`1531185664112909315`

[1,1,2,5,18,89,523,3599,28342,251532,2483877, 27012163,320769441,4129906549,57302453361, 852373993744,13531437150692,228343001917932, 4081631159283027,77040788131467135, 1531185664112909315]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)