A136509 as tables, graphs or sounds

A136509 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`16`
`4`		`50`
`5`		`171`
`6`		`697`
`7`		`3416`
`8`		`21126`
`9`		`169105`
`10`		`1794683`
`11`		`25891713`
`12`		`507686588`
`13`		`13878639286`
`14`		`518836271475`
`15`		`27356839451662`
`16`		`1968958300103603`
`17`		`200935638262212462`
`18`		`27892630019328034846`
`19`		`5502857784211927305980`

[1,2,6,16,50,171,697,3416,21126,169105,1794683, 25891713,507686588,13878639286,518836271475, 27356839451662,1968958300103603, 200935638262212462,27892630019328034846, 5502857784211927305980]

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

AT&T Labs Research