A268431 - OEIS

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A268431 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`4`
`4`		`17`
`5`		`68`
`6`		`270`
`7`		`1064`
`8`		`4181`
`9`		`16404`
`10`		`64322`
`11`		`252184`
`12`		`988890`
`13`		`3879016`
`14`		`15222236`
`15`		`59764048`
`16`		`234755661`
`17`		`922591156`
`18`		`3627586618`
`19`		`14270426936`
`20`		`56164324206`
`21`		`221147123768`
`22`		`871147242116`
`23`		`3433076812336`
`24`		`13534723031298`
`25`		`53380361293960`
`26`		`210606884630932`

[1,4,17,68,270,1064,4181,16404,64322,252184, 988890,3879016,15222236,59764048,234755661, 922591156,3627586618,14270426936,56164324206, 221147123768,871147242116,3433076812336, 13534723031298,53380361293960,210606884630932]

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Last modified April 16 16:32 EDT 2024. Contains 371749 sequences. (Running on oeis4.)