A189881 - OEIS

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A189881 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`0`
`3`		`0`
`4`		`2`
`5`		`10`
`6`		`4`
`7`		`12`
`8`		`32`
`9`		`96`
`10`		`144`
`11`		`528`
`12`		`1712`
`13`		`7472`
`14`		`24500`
`15`		`103536`
`16`		`486020`
`17`		`2218808`
`18`		`11113020`
`19`		`59242576`
`20`		`342584556`
`21`		`1981826412`

[1,0,0,2,10,4,12,32,96,144,528,1712,7472,24500, 103536,486020,2218808,11113020,59242576,342584556, 1981826412]

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Last modified May 15 17:02 EDT 2024. Contains 372548 sequences. (Running on oeis4.)