A111539 as tables, graphs or sounds

A111539 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`7`
`3`		`34`
`4`		`211`
`5`		`1564`
`6`		`13291`
`7`		`126430`
`8`		`1326211`
`9`		`15184744`
`10`		`188348659`
`11`		`2515991290`
`12`		`36018842875`
`13`		`550317892372`
`14`		`8940695112331`
`15`		`153950966471734`
`16`		`2801321782936819`
`17`		`53720913548093344`
`18`		`1083061044893428675`

[1,2,7,34,211,1564,13291,126430,1326211,15184744, 188348659,2515991290,36018842875,550317892372, 8940695112331,153950966471734,2801321782936819, 53720913548093344,1083061044893428675]

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

AT&T Labs Research