A060111 as tables, graphs or sounds

A060111 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`15`
`3`		`56`
`4`		`207`
`5`		`764`
`6`		`2805`
`7`		`10288`
`8`		`37609`
`9`		`137380`
`10`		`500655`
`11`		`1823440`
`12`		`6629423`
`13`		`24090332`
`14`		`87418221`
`15`		`317085352`
`16`		`1148825185`
`17`		`4160744164`
`18`		`15054719697`
`19`		`54454345624`
`20`		`196805925995`
`21`		`711077858188`
`22`		`2567375653681`
`23`		`9267176552040`

[1,4,15,56,207,764,2805,10288,37609,137380,500655, 1823440,6629423,24090332,87418221,317085352, 1148825185,4160744164,15054719697,54454345624, 196805925995,711077858188,2567375653681, 9267176552040]

Last modified December 4 15:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research