A215989 - OEIS

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A215989 as a simple table

`n`		`a(n)`
`9`		`1`
`10`		`1`
`11`		`3`
`12`		`6`
`13`		`13`
`14`		`26`
`15`		`56`
`16`		`115`
`17`		`247`
`18`		`533`
`19`		`1174`
`20`		`2633`
`21`		`6031`
`22`		`14055`
`23`		`33343`
`24`		`80386`
`25`		`196569`
`26`		`487017`
`27`		`1220491`
`28`		`3090331`
`29`		`7896160`
`30`		`20341323`
`31`		`52783053`
`32`		`137867631`
`33`		`362237861`
`34`		`956881142`
`35`		`2540051927`
`36`		`6772828374`
`37`		`18133435767`
`38`		`48734282113`
`39`		`131434508449`
`40`		`355627568994`

[1,1,3,6,13,26,56,115,247,533,1174,2633,6031, 14055,33343,80386,196569,487017,1220491,3090331, 7896160,20341323,52783053,137867631,362237861, 956881142,2540051927,6772828374,18133435767, 48734282113,131434508449,355627568994]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)