A009135 - OEIS

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A009135 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`3`
`4`		`12`
`5`		`30`
`6`		`180`
`7`		`490`
`8`		`5600`
`9`		`8064`
`10`		`276360`
`11`		`-575872`
`12`		`22950576`
`13`		`-166106512`
`14`		`3194871680`
`15`		`-38456524080`
`16`		`663548916992`
`17`		`-10330038449792`
`18`		`186243968575488`
`19`		`-3385894106098944`
`20`		`66478140305126272`
`21`		`-1354838641265098752`

[1,0,1,3,12,30,180,490,5600,8064,276360,-575872, 22950576,-166106512,3194871680,-38456524080, 663548916992,-10330038449792,186243968575488, -3385894106098944,66478140305126272, -1354838641265098752]

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