A143990 - OEIS

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A143990 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`42`
`4`		`888`
`5`		`31920`
`6`		`1750320`
`7`		`136115280`
`8`		`14254007040`
`9`		`1934091250560`
`10`		`330078373228800`
`11`		`69199130042380800`
`12`		`17481751115946163200`
`13`		`5237838647954514201600`
`14`		`1836425205487182172262400`
`15`		`744852154338379227748608000`
`16`		`346052141662324885396697088000`
`17`		`182572078442025253754006986752000`

[1,1,4,42,888,31920,1750320,136115280,14254007040, 1934091250560,330078373228800,69199130042380800, 17481751115946163200,5237838647954514201600, 1836425205487182172262400, 744852154338379227748608000, 346052141662324885396697088000, 182572078442025253754006986752000]

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Last modified September 15 16:35 EDT 2024. Contains 375938 sequences. (Running on oeis4.)