A026591 - OEIS

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A026591 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`9`
`4`		`38`
`5`		`140`
`6`		`701`
`7`		`2534`
`8`		`13294`
`9`		`48369`
`10`		`258430`
`11`		`947694`
`12`		`5114572`
`13`		`18872399`
`14`		`102539204`
`15`		`380143356`
`16`		`2075658454`
`17`		`7723000261`
`18`		`42330184638`
`19`		`157951859953`
`20`		`868376395790`
`21`		`3247811317907`
`22`		`17899895038348`
`23`		`67075896452000`
`24`		`370442993383238`
`25`		`1390392820937920`
`26`		`7692166179956366`
`27`		`28910883325637649`
`28`		`160184255555687056`

[1,2,9,38,140,701,2534,13294,48369,258430,947694, 5114572,18872399,102539204,380143356,2075658454, 7723000261,42330184638,157951859953,868376395790, 3247811317907,17899895038348,67075896452000, 370442993383238,1390392820937920,7692166179956366, 28910883325637649,160184255555687056]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)