A009454 - OEIS

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A009454 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`-1`
`3`		`1`
`4`		`0`
`5`		`-10`
`6`		`90`
`7`		`-730`
`8`		`6160`
`9`		`-55900`
`10`		`549900`
`11`		`-5864300`
`12`		`67610400`
`13`		`-839594600`
`14`		`11186357000`
`15`		`-159300557000`
`16`		`2416003824000`
`17`		`-38894192662000`
`18`		`662595375078000`
`19`		`-11911522255750000`
`20`		`225382826562400000`

[0,1,-1,1,0,-10,90,-730,6160,-55900,549900, -5864300,67610400,-839594600,11186357000, -159300557000,2416003824000,-38894192662000, 662595375078000,-11911522255750000, 225382826562400000]

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)