A055991 as tables, graphs or sounds

A055991 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`5`
`3`		`19`
`4`		`69`
`5`		`250`
`6`		`907`
`7`		`3292`
`8`		`11949`
`9`		`43371`
`10`		`157422`
`11`		`571388`
`12`		`2073943`
`13`		`7527704`
`14`		`27322992`
`15`		`99173120`
`16`		`359964521`
`17`		`1306548149`
`18`		`4742323107`
`19`		`17213011605`
`20`		`62477347458`
`21`		`226771411939`
`22`		`823102698260`
`23`		`2987581397893`
`24`		`10843899100203`

[1,5,19,69,250,907,3292,11949,43371,157422,571388, 2073943,7527704,27322992,99173120,359964521, 1306548149,4742323107,17213011605,62477347458, 226771411939,823102698260,2987581397893, 10843899100203]

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research