A108490 as tables, graphs or sounds

A108490 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`10`
`3`		`56`
`4`		`268`
`5`		`1448`
`6`		`7864`
`7`		`42752`
`8`		`236368`
`9`		`1313696`
`10`		`7339552`
`11`		`41217920`
`12`		`232321984`
`13`		`1313731712`
`14`		`7449834880`
`15`		`42347380736`
`16`		`241225384192`
`17`		`1376662561280`
`18`		`7869527190016`
`19`		`45051709749248`
`20`		`258256281078784`
`21`		`1482218578159616`

[1,2,10,56,268,1448,7864,42752,236368,1313696, 7339552,41217920,232321984,1313731712,7449834880, 42347380736,241225384192,1376662561280, 7869527190016,45051709749248,258256281078784, 1482218578159616]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research