A013270 - OEIS

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A013270 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`-1`
`3`		`3`
`4`		`-6`
`5`		`15`
`6`		`-105`
`7`		`630`
`8`		`-1260`
`9`		`-6615`
`10`		`-4725`
`11`		`103950`
`12`		`19022850`
`13`		`-387161775`
`14`		`3887158275`
`15`		`-49945896000`
`16`		`1286674389000`
`17`		`-26163490728375`
`18`		`376381518888375`
`19`		`-6290132811212250`
`20`		`161471805183438750`

[0,0,-1,3,-6,15,-105,630,-1260,-6615,-4725,103950, 19022850,-387161775,3887158275,-49945896000, 1286674389000,-26163490728375,376381518888375, -6290132811212250,161471805183438750]

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Last modified July 14 05:06 EDT 2024. Contains 374291 sequences. (Running on oeis4.)