A017940 - OEIS

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A017940 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`12`
`3`		`41`
`4`		`144`
`5`		`498`
`6`		`1728`
`7`		`5985`
`8`		`20736`
`9`		`71831`
`10`		`248832`
`11`		`861979`
`12`		`2985984`
`13`		`10343751`
`14`		`35831808`
`15`		`124125023`
`16`		`429981696`
`17`		`1489500287`
`18`		`5159780352`
`19`		`17874003451`
`20`		`61917364224`
`21`		`214488041413`
`22`		`743008370688`

[1,3,12,41,144,498,1728,5985,20736,71831,248832, 861979,2985984,10343751,35831808,124125023, 429981696,1489500287,5159780352,17874003451, 61917364224,214488041413,743008370688]

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Last modified April 23 09:48 EDT 2024. Contains 371905 sequences. (Running on oeis4.)