A027120 as tables, graphs or sounds

A027120 formatted as a simple table:

`n`		`a(n)`
`2`		`2`
`3`		`7`
`4`		`20`
`5`		`56`
`6`		`155`
`7`		`429`
`8`		`1188`
`9`		`3298`
`10`		`9181`
`11`		`25634`
`12`		`71781`
`13`		`201569`
`14`		`567538`
`15`		`1601971`
`16`		`4532460`
`17`		`12851882`
`18`		`36516613`
`19`		`103955432`
`20`		`296471643`
`21`		`846932919`
`22`		`2423256440`
`23`		`6943726380`
`24`		`19924638557`
`25`		`57247669927`
`26`		`164688166948`
`27`		`474323305547`

[2,7,20,56,155,429,1188,3298,9181,25634,71781, 201569,567538,1601971,4532460,12851882,36516613, 103955432,296471643,846932919,2423256440, 6943726380,19924638557,57247669927,164688166948, 474323305547]

Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

AT&T Labs Research