A305620 - OEIS

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A305620 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`-1`
`3`		`2`
`4`		`0`
`5`		`-6`
`6`		`60`
`7`		`-540`
`8`		`3780`
`9`		`12600`
`10`		`-199080`
`11`		`3074400`
`12`		`-45738000`
`13`		`511434000`
`14`		`-5621616000`
`15`		`55394539200`
`16`		`960323364000`
`17`		`-24001273296000`
`18`		`498178528848000`
`19`		`-9994137465312000`
`20`		`156104172544320000`
`21`		`-2076607873660320000`
`22`		`18061446353670720000`
`23`		`206725394268993600000`

[1,-1,2,0,-6,60,-540,3780,12600,-199080,3074400, -45738000,511434000,-5621616000,55394539200, 960323364000,-24001273296000,498178528848000, -9994137465312000,156104172544320000, -2076607873660320000,18061446353670720000, 206725394268993600000]

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Last modified June 5 04:25 EDT 2024. Contains 373102 sequences. (Running on oeis4.)