A005755 as tables, graphs or sounds

A005755 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`1`
`5`		`4`
`6`		`16`
`7`		`64`
`8`		`252`
`9`		`1018`
`10`		`4182`
`11`		`17510`
`12`		`74510`
`13`		`322034`
`14`		`1410362`
`15`		`6251114`
`16`		`27998532`
`17`		`126583634`
`18`		`577079333`
`19`		`2650573354`
`20`		`12256481666`
`21`		`57021299394`
`22`		`266754944481`
`23`		`1254245360430`
`24`		`5924659521632`
`25`		`28105641930102`

[0,0,0,1,4,16,64,252,1018,4182,17510,74510,322034, 1410362,6251114,27998532,126583634,577079333, 2650573354,12256481666,57021299394,266754944481, 1254245360430,5924659521632,28105641930102]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research