A121735 - OEIS

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A121735 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`-1`
`3`		`6`
`4`		`-12`
`5`		`-60`
`6`		`720`
`7`		`-2520`
`8`		`-20160`
`9`		`362880`
`10`		`-1814400`
`11`		`-19958400`
`12`		`479001600`
`13`		`-3113510400`
`14`		`-43589145600`
`15`		`1307674368000`
`16`		`-10461394944000`
`17`		`-177843714048000`
`18`		`6402373705728000`
`19`		`-60822550204416000`
`20`		`-1216451004088320000`
`21`		`51090942171709440000`
`22`		`-562000363888803840000`

[1,-1,6,-12,-60,720,-2520,-20160,362880,-1814400, -19958400,479001600,-3113510400,-43589145600, 1307674368000,-10461394944000,-177843714048000, 6402373705728000,-60822550204416000, -1216451004088320000,51090942171709440000, -562000363888803840000]

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)