A027741 - OEIS

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A027741 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`4`
`3`		`20`
`4`		`48`
`5`		`280`
`6`		`720`
`7`		`5580`
`8`		`14976`
`9`		`99360`
`10`		`291200`
`11`		`2219460`
`12`		`5184000`
`13`		`46950120`
`14`		`139991040`
`15`		`876960000`
`16`		`2752708608`
`17`		`22384531584`
`18`		`55435726080`
`19`		`499226178000`
`20`		`1280348160000`
`21`		`10957459615200`
`22`		`34031246515200`
`23`		`259121741860800`
`24`		`630789120000000`
`25`		`5255180000000000`

[1,2,4,20,48,280,720,5580,14976,99360,291200, 2219460,5184000,46950120,139991040,876960000, 2752708608,22384531584,55435726080,499226178000, 1280348160000,10957459615200,34031246515200, 259121741860800,630789120000000,5255180000000000]

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Last modified April 16 07:08 EDT 2024. Contains 371698 sequences. (Running on oeis4.)