A067648 - OEIS

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A067648 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`2`
`2`		`0`
`3`		`2`
`4`		`4`
`5`		`12`
`6`		`60`
`7`		`226`
`8`		`1076`
`9`		`5156`
`10`		`24984`
`11`		`128548`
`12`		`663040`
`13`		`3514968`
`14`		`18918792`
`15`		`103123906`
`16`		`569877652`
`17`		`3180066004`
`18`		`17921451960`
`19`		`101842206548`
`20`		`583109887600`
`21`		`3361640932872`
`22`		`19499226668816`

[0,2,0,2,4,12,60,226,1076,5156,24984,128548, 663040,3514968,18918792,103123906,569877652, 3180066004,17921451960,101842206548,583109887600, 3361640932872,19499226668816]

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Last modified April 23 02:53 EDT 2024. Contains 371906 sequences. (Running on oeis4.)