A001811 - OEIS

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A001811 as a simple table

`n`		`a(n)`
`4`		`1`
`5`		`25`
`6`		`450`
`7`		`7350`
`8`		`117600`
`9`		`1905120`
`10`		`31752000`
`11`		`548856000`
`12`		`9879408000`
`13`		`185513328000`
`14`		`3636061228800`
`15`		`74373979680000`
`16`		`1586644899840000`
`17`		`35272336619520000`
`18`		`816302647480320000`
`19`		`19645683716026368000`
`20`		`491142092900659200000`
`21`		`12740803704070041600000`

[1,25,450,7350,117600,1905120,31752000,548856000, 9879408000,185513328000,3636061228800, 74373979680000,1586644899840000,35272336619520000, 816302647480320000,19645683716026368000, 491142092900659200000,12740803704070041600000]

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Last modified April 23 07:16 EDT 2024. Contains 371905 sequences. (Running on oeis4.)