A081011 as tables, graphs or sounds

A081011 formatted as a simple table:

`n`		`a(n)`
`0`		`4`
`1`		`15`
`2`		`91`
`3`		`612`
`4`		`4183`
`5`		`28659`
`6`		`196420`
`7`		`1346271`
`8`		`9227467`
`9`		`63245988`
`10`		`433494439`
`11`		`2971215075`
`12`		`20365011076`
`13`		`139583862447`
`14`		`956722026043`
`15`		`6557470319844`
`16`		`44945570212855`
`17`		`308061521170131`
`18`		`2111485077978052`
`19`		`14472334024676223`

[4,15,91,612,4183,28659,196420,1346271,9227467, 63245988,433494439,2971215075,20365011076, 139583862447,956722026043,6557470319844, 44945570212855,308061521170131,2111485077978052, 14472334024676223]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research