A165559 - OEIS

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A165559 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`1`
`4`		`4`
`5`		`4`
`6`		`20`
`7`		`20`
`8`		`240`
`9`		`1440`
`10`		`10080`
`11`		`10080`
`12`		`161280`
`13`		`161280`
`14`		`1451520`
`15`		`11612160`
`16`		`371589120`
`17`		`371589120`
`18`		`7803371520`
`19`		`7803371520`
`20`		`187280916480`
`21`		`1872809164800`
`22`		`24346519142400`
`23`		`24346519142400`
`24`		`1071246842265600`
`25`		`10712468422656000`

[1,1,4,4,20,20,240,1440,10080,10080,161280,161280, 1451520,11612160,371589120,371589120,7803371520, 7803371520,187280916480,1872809164800, 24346519142400,24346519142400,1071246842265600, 10712468422656000]

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)