A009252 - OEIS

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A009252 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`20`
`3`		`456`
`4`		`18192`
`5`		`1111840`
`6`		`96035136`
`7`		`11101474944`
`8`		`1651123634432`
`9`		`306656507699712`
`10`		`69472549405824000`
`11`		`18838618322988648448`
`12`		`6019938761233443262464`
`13`		`2237523930630521828745216`

[1,2,20,456,18192,1111840,96035136,11101474944, 1651123634432,306656507699712,69472549405824000, 18838618322988648448,6019938761233443262464, 2237523930630521828745216]

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Last modified May 8 23:08 EDT 2024. Contains 372341 sequences. (Running on oeis4.)