A000620 - OEIS

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A000620 as a simple table

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`2`
`6`		`6`
`7`		`20`
`8`		`60`
`9`		`176`
`10`		`512`
`11`		`1488`
`12`		`4326`
`13`		`12648`
`14`		`37186`
`15`		`109980`
`16`		`327216`
`17`		`979020`
`18`		`2944414`
`19`		`8897732`
`20`		`27005290`
`21`		`82288516`
`22`		`251650788`
`23`		`772127678`
`24`		`2376238138`
`25`		`7333188770`
`26`		`22688297950`
`27`		`70360977228`
`28`		`218678818026`
`29`		`681017928476`
`30`		`2124840874610`
`31`		`6641336507270`
`32`		`20791999731518`

[0,0,0,0,2,6,20,60,176,512,1488,4326,12648,37186, 109980,327216,979020,2944414,8897732,27005290, 82288516,251650788,772127678,2376238138, 7333188770,22688297950,70360977228,218678818026, 681017928476,2124840874610,6641336507270, 20791999731518]

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Last modified July 22 10:14 EDT 2024. Contains 374490 sequences. (Running on oeis4.)