A277920 - OEIS

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A277920 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`4`
`3`		`20`
`4`		`120`
`5`		`780`
`6`		`5382`
`7`		`38638`
`8`		`285762`
`9`		`2162033`
`10`		`16655167`
`11`		`130193037`
`12`		`1030117023`
`13`		`8234025705`
`14`		`66391916397`
`15`		`539360587341`
`16`		`4410492096741`
`17`		`36274113675369`
`18`		`299864297741292`
`19`		`2490192142719336`
`20`		`20764402240048267`
`21`		`173784940354460219`
`22`		`1459360304511145146`

[0,1,4,20,120,780,5382,38638,285762,2162033, 16655167,130193037,1030117023,8234025705, 66391916397,539360587341,4410492096741, 36274113675369,299864297741292,2490192142719336, 20764402240048267,173784940354460219, 1459360304511145146]

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Last modified May 13 09:49 EDT 2024. Contains 372504 sequences. (Running on oeis4.)