A139678 - OEIS

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A139678 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`8`
`3`		`45`
`4`		`315`
`5`		`2634`
`6`		`25518`
`7`		`280257`
`8`		`3434595`
`9`		`46400310`
`10`		`684374076`
`11`		`10933866027`
`12`		`187983528813`
`13`		`3458845917990`
`14`		`67787903801790`
`15`		`1409293876400019`
`16`		`30968525550983913`
`17`		`717023025711440082`
`18`		`17442766619178969600`

[1,2,8,45,315,2634,25518,280257,3434595,46400310, 684374076,10933866027,187983528813,3458845917990, 67787903801790,1409293876400019,30968525550983913, 717023025711440082,17442766619178969600]

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Last modified May 25 11:36 EDT 2013. Contains 225647 sequences.