A129556 as tables, graphs or sounds

A129556 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`2`
`3`		`21`
`4`		`95`
`5`		`816`
`6`		`3626`
`7`		`31005`
`8`		`137711`
`9`		`1177392`
`10`		`5229410`
`11`		`44709909`
`12`		`198579887`
`13`		`1697799168`
`14`		`7540806314`
`15`		`64471658493`
`16`		`286352060063`
`17`		`2448225223584`
`18`		`10873837476098`
`19`		`92968086837717`
`20`		`412919472031679`
`21`		`3530339074609680`

[0,2,21,95,816,3626,31005,137711,1177392,5229410, 44709909,198579887,1697799168,7540806314, 64471658493,286352060063,2448225223584, 10873837476098,92968086837717,412919472031679, 3530339074609680]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research