A117641 as tables, graphs or sounds

A117641 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`3`
`4`		`11`
`5`		`42`
`6`		`167`
`7`		`684`
`8`		`2867`
`9`		`12240`
`10`		`53043`
`11`		`232731`
`12`		`1031829`
`13`		`4615542`
`14`		`20805081`
`15`		`94410363`
`16`		`430945739`
`17`		`1977366192`
`18`		`9115261211`
`19`		`42195093993`
`20`		`196060049129`
`21`		`914110333422`
`22`		`4275222950221`
`23`		`20051858039718`
`24`		`94294269673861`

[1,0,1,3,11,42,167,684,2867,12240,53043,232731, 1031829,4615542,20805081,94410363,430945739, 1977366192,9115261211,42195093993,196060049129, 914110333422,4275222950221,20051858039718, 94294269673861]

Last modified December 4 08:07 EST 2009. Contains 170310 sequences.

AT&T Labs Research