A213640 - OEIS

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A213640 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`12`
`4`		`132`
`5`		`2040`
`6`		`40560`
`7`		`986160`
`8`		`28344960`
`9`		`940222080`
`10`		`35350378560`
`11`		`1485586206720`
`12`		`69006955691520`
`13`		`3510875174526720`
`14`		`194162144086310400`
`15`		`11597083480958976000`
`16`		`744005639375065267200`
`17`		`51024015181398702643200`
`18`		`3725042532308649628876800`
`19`		`288434288836744276094668800`

[1,2,12,132,2040,40560,986160,28344960,940222080, 35350378560,1485586206720,69006955691520, 3510875174526720,194162144086310400, 11597083480958976000,744005639375065267200, 51024015181398702643200,3725042532308649628876800, 288434288836744276094668800]

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Last modified April 19 03:27 EDT 2024. Contains 371782 sequences. (Running on oeis4.)