A127691 - OEIS

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A127691 as a simple table

`n`		`a(n)`
`0`		`-1`
`1`		`0`
`2`		`0`
`3`		`2`
`4`		`64`
`5`		`2002`
`6`		`69264`
`7`		`2697354`
`8`		`117899520`
`9`		`5740530914`
`10`		`308814720400`
`11`		`18213955960378`
`12`		`1169672907313728`
`13`		`81286160430474066`
`14`		`6080123714344570128`
`15`		`487166244246501489002`
`16`		`41636260100744439399424`
`17`		`3781449867356996500139458`
`18`		`363724112817207189865471248`

[-1,0,0,2,64,2002,69264,2697354,117899520, 5740530914,308814720400,18213955960378, 1169672907313728,81286160430474066, 6080123714344570128,487166244246501489002, 41636260100744439399424,3781449867356996500139458, 363724112817207189865471248]

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)