A026988 - OEIS

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A026988 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`10`
`4`		`69`
`5`		`340`
`6`		`1696`
`7`		`8774`
`8`		`44500`
`9`		`203884`
`10`		`998953`
`11`		`5026154`
`12`		`24474925`
`13`		`110862660`
`14`		`540493911`
`15`		`2706193730`
`16`		`13062307900`
`17`		`59214077236`
`18`		`288140818097`
`19`		`1439810493778`
`20`		`6934754735653`
`21`		`31544380215556`
`22`		`153401000364266`
`23`		`765589966351344`
`24`		`3686304297844080`
`25`		`16830906540844256`
`26`		`81840064308561274`

[1,10,69,340,1696,8774,44500,203884,998953, 5026154,24474925,110862660,540493911,2706193730, 13062307900,59214077236,288140818097, 1439810493778,6934754735653,31544380215556, 153401000364266,765589966351344,3686304297844080, 16830906540844256,81840064308561274]

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Last modified May 13 06:21 EDT 2024. Contains 372498 sequences. (Running on oeis4.)