A025183 as tables, graphs or sounds

A025183 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`20`
`4`		`111`
`5`		`616`
`6`		`3465`
`7`		`19668`
`8`		`112476`
`9`		`647088`
`10`		`3741156`
`11`		`21718520`
`12`		`126520240`
`13`		`739225704`
`14`		`4330188265`
`15`		`25421864580`
`16`		`149541718275`
`17`		`881200519200`
`18`		`5200715525016`
`19`		`30736780735752`
`20`		`181886951796886`

[1,4,20,111,616,3465,19668,112476,647088,3741156, 21718520,126520240,739225704,4330188265, 25421864580,149541718275,881200519200, 5200715525016,30736780735752,181886951796886]

Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

AT&T Labs Research