A027057 as tables, graphs or sounds

A027057 formatted as a simple table:

`n`		`a(n)`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`9`
`6`		`21`
`7`		`51`
`8`		`128`
`9`		`329`
`10`		`861`
`11`		`2285`
`12`		`6132`
`13`		`16606`
`14`		`45313`
`15`		`124446`
`16`		`343680`
`17`		`953753`
`18`		`2658133`
`19`		`7436541`
`20`		`20875972`
`21`		`58783892`
`22`		`165989825`
`23`		`469903672`
`24`		`1333359488`
`25`		`3791535934`
`26`		`10802911297`
`27`		`30836181436`
`28`		`88169413364`
`29`		`252500533673`

[1,2,4,9,21,51,128,329,861,2285,6132,16606,45313, 124446,343680,953753,2658133,7436541,20875972, 58783892,165989825,469903672,1333359488, 3791535934,10802911297,30836181436,88169413364, 252500533673]

Last modified December 6 11:04 EST 2009. Contains 170427 sequences.

AT&T Labs Research