A068413 as tables, graphs or sounds

A068413 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`5`
`3`		`22`
`4`		`231`
`5`		`8349`
`6`		`1741630`
`7`		`4351078600`
`8`		`365749566870782`
`9`		`4453575699570940947378`
`10`		`61847822068260244309086870983975`
`11`		`18116048323611252751541173214616030020513022685`
`12`		`6927233917602120527467409170319882882996950147283323368445315320451`

[1,2,5,22,231,8349,1741630,4351078600, 365749566870782,4453575699570940947378, 61847822068260244309086870983975, 18116048323611252751541173214616030020513022685, 6927233917602120527467409170319882882996950147283323368445315320451]

Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

AT&T Labs Research