A025274 - OEIS

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A025274 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`0`
`5`		`2`
`6`		`5`
`7`		`14`
`8`		`42`
`9`		`122`
`10`		`360`
`11`		`1068`
`12`		`3181`
`13`		`9526`
`14`		`28654`
`15`		`86558`
`16`		`262528`
`17`		`799212`
`18`		`2441538`
`19`		`7483052`
`20`		`23004500`
`21`		`70921492`
`22`		`219226064`
`23`		`679328952`
`24`		`2109948221`
`25`		`6567539814`
`26`		`20483936790`
`27`		`64010196918`
`28`		`200382350016`
`29`		`628344541644`
`30`		`1973428795542`

[1,1,1,0,2,5,14,42,122,360,1068,3181,9526,28654, 86558,262528,799212,2441538,7483052,23004500, 70921492,219226064,679328952,2109948221, 6567539814,20483936790,64010196918,200382350016, 628344541644,1973428795542]

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Last modified September 10 12:47 EDT 2024. Contains 375790 sequences. (Running on oeis4.)