A121580 as tables, graphs or sounds

A121580 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`11`
`4`		`53`
`5`		`317`
`6`		`2237`
`7`		`18077`
`8`		`164237`
`9`		`1656077`
`10`		`18348557`
`11`		`221561357`
`12`		`2895986957`
`13`		`40737113357`
`14`		`613623026957`
`15`		`9854521894157`
`16`		`168083120422157`
`17`		`3034505335078157`
`18`		`57810369261862157`
`19`		`1159018646647078157`

[1,3,11,53,317,2237,18077,164237,1656077,18348557, 221561357,2895986957,40737113357,613623026957, 9854521894157,168083120422157,3034505335078157, 57810369261862157,1159018646647078157]

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research