A006351 as tables, graphs or sounds

A006351 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`8`
`4`		`52`
`5`		`472`
`6`		`5504`
`7`		`78416`
`8`		`1320064`
`9`		`25637824`
`10`		`564275648`
`11`		`13879795712`
`12`		`377332365568`
`13`		`11234698041088`
`14`		`363581406419456`
`15`		`12707452084972544`
`16`		`477027941930515456`
`17`		`19142041172838025216`
`18`		`817675811320888020992`

[1,2,8,52,472,5504,78416,1320064,25637824, 564275648,13879795712,377332365568,11234698041088, 363581406419456,12707452084972544, 477027941930515456,19142041172838025216, 817675811320888020992]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research