A006980 as tables, graphs or sounds

A006980 formatted as a simple table:

`n`		`a(n)`
`6`		`1`
`7`		`2`
`8`		`5`
`9`		`12`
`10`		`28`
`11`		`64`
`12`		`143`
`13`		`315`
`14`		`687`
`15`		`1485`
`16`		`3186`
`17`		`6792`
`18`		`14401`
`19`		`30391`
`20`		`63872`
`21`		`133751`
`22`		`279177`
`23`		`581040`
`24`		`1206151`
`25`		`2497895`
`26`		`5161982`
`27`		`10646564`
`28`		`21919161`
`29`		`45052841`
`30`		`92461171`
`31`		`189489255`
`32`		`387830160`
`33`		`792810956`
`34`		`1618840800`
`35`		`3301999647`

[1,2,5,12,28,64,143,315,687,1485,3186,6792,14401, 30391,63872,133751,279177,581040,1206151,2497895, 5161982,10646564,21919161,45052841,92461171, 189489255,387830160,792810956,1618840800, 3301999647]

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

AT&T Labs Research