A010907 as tables, graphs or sounds

A010907 formatted as a simple table:

`n`		`a(n)`
`0`		`4`
`1`		`19`
`2`		`90`
`3`		`426`
`4`		`2016`
`5`		`9541`
`6`		`45154`
`7`		`213697`
`8`		`1011348`
`9`		`4786332`
`10`		`22651920`
`11`		`107203069`
`12`		`507352048`
`13`		`2401107571`
`14`		`11363544486`
`15`		`53779407822`
`16`		`254517831936`
`17`		`1204537747753`
`18`		`5700626846950`
`19`		`26978935702753`

[4,19,90,426,2016,9541,45154,213697,1011348, 4786332,22651920,107203069,507352048,2401107571, 11363544486,53779407822,254517831936, 1204537747753,5700626846950,26978935702753]

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

AT&T Labs Research