A004254 as tables, graphs or sounds

A004254 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`5`
`3`		`24`
`4`		`115`
`5`		`551`
`6`		`2640`
`7`		`12649`
`8`		`60605`
`9`		`290376`
`10`		`1391275`
`11`		`6665999`
`12`		`31938720`
`13`		`153027601`
`14`		`733199285`
`15`		`3512968824`
`16`		`16831644835`
`17`		`80645255351`
`18`		`386394631920`
`19`		`1851327904249`
`20`		`8870244889325`
`21`		`42499896542376`
`22`		`203629237822555`

[0,1,5,24,115,551,2640,12649,60605,290376,1391275, 6665999,31938720,153027601,733199285,3512968824, 16831644835,80645255351,386394631920, 1851327904249,8870244889325,42499896542376, 203629237822555]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research