A000168 as tables, graphs or sounds

A000168 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`9`
`3`		`54`
`4`		`378`
`5`		`2916`
`6`		`24057`
`7`		`208494`
`8`		`1876446`
`9`		`17399772`
`10`		`165297834`
`11`		`1602117468`
`12`		`15792300756`
`13`		`157923007560`
`14`		`1598970451545`
`15`		`16365932856990`
`16`		`169114639522230`
`17`		`1762352559231660`
`18`		`18504701871932430`
`19`		`195621134074714260`

[1,2,9,54,378,2916,24057,208494,1876446,17399772, 165297834,1602117468,15792300756,157923007560, 1598970451545,16365932856990,169114639522230, 1762352559231660,18504701871932430, 195621134074714260]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research