A027561 as tables, graphs or sounds

A027561 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`2`
`6`		`6`
`7`		`22`
`8`		`56`
`9`		`152`
`10`		`356`
`11`		`858`
`12`		`1914`
`13`		`4334`
`14`		`9372`
`15`		`20440`
`16`		`43280`
`17`		`92114`
`18`		`192182`
`19`		`402246`
`20`		`830328`
`21`		`1717496`
`22`		`3517668`
`23`		`7214218`
`24`		`14689994`
`25`		`29938526`
`26`		`60697148`
`27`		`123127224`
`28`		`248807472`
`29`		`502963778`
`30`		`1013829414`
`31`		`2044098166`

[0,0,0,0,0,2,6,22,56,152,356,858,1914,4334,9372, 20440,43280,92114,192182,402246,830328,1717496, 3517668,7214218,14689994,29938526,60697148, 123127224,248807472,502963778,1013829414, 2044098166]

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

AT&T Labs Research