A010908 as tables, graphs or sounds

A010908 formatted as a simple table:

`n`		`a(n)`
`0`		`4`
`1`		`21`
`2`		`110`
`3`		`576`
`4`		`3016`
`5`		`15792`
`6`		`82688`
`7`		`432960`
`8`		`2267008`
`9`		`11870208`
`10`		`62153216`
`11`		`325438464`
`12`		`1704017920`
`13`		`8922353664`
`14`		`46718050304`
`15`		`244618887168`
`16`		`1280841121792`
`17`		`6706571182080`
`18`		`35116062605312`
`19`		`183870090903552`

[4,21,110,576,3016,15792,82688,432960,2267008, 11870208,62153216,325438464,1704017920,8922353664, 46718050304,244618887168,1280841121792, 6706571182080,35116062605312,183870090903552]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research