A136780 as tables, graphs or sounds

A136780 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`13`
`4`		`68`
`5`		`358`
`6`		`1871`
`7`		`9757`
`8`		`50825`
`9`		`264622`
`10`		`1377455`
`11`		`7169434`
`12`		`37314044`
`13`		`194200651`
`14`		`1010706167`
`15`		`5260139653`
`16`		`27375923678`
`17`		`142475405353`
`18`		`741499470476`
`19`		`3859061584762`
`20`		`20084107492055`
`21`		`104525763472957`
`22`		`543994053280925`

[1,2,13,68,358,1871,9757,50825,264622,1377455, 7169434,37314044,194200651,1010706167,5260139653, 27375923678,142475405353,741499470476, 3859061584762,20084107492055,104525763472957, 543994053280925]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research