A090856 as tables, graphs or sounds

A090856 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`7`
`2`		`27`
`3`		`104`
`4`		`378`
`5`		`1327`
`6`		`4553`
`7`		`15351`
`8`		`51072`
`9`		`168147`
`10`		`548915`
`11`		`1779377`
`12`		`5734022`
`13`		`18384612`
`14`		`58688163`
`15`		`186632570`
`16`		`591509670`
`17`		`1869118923`
`18`		`5890466415`
`19`		`18518945789`
`20`		`58094637801`
`21`		`181884111404`
`22`		`568416743474`
`23`		`1773443888599`

[1,7,27,104,378,1327,4553,15351,51072,168147, 548915,1779377,5734022,18384612,58688163, 186632570,591509670,1869118923,5890466415, 18518945789,58094637801,181884111404,568416743474, 1773443888599]

Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

AT&T Labs Research