A049222 as tables, graphs or sounds

A049222 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`1`
`5`		`4`
`6`		`13`
`7`		`41`
`8`		`130`
`9`		`415`
`10`		`1329`
`11`		`4260`
`12`		`13657`
`13`		`43781`
`14`		`140346`
`15`		`449891`
`16`		`1442157`
`17`		`4622932`
`18`		`14819125`
`19`		`47503729`
`20`		`152276498`
`21`		`488132887`
`22`		`1564743865`
`23`		`5015895108`
`24`		`16078800033`
`25`		`51541709869`
`26`		`165220529546`
`27`		`529625878779`
`28`		`1697752526549`

[0,0,0,1,4,13,41,130,415,1329,4260,13657,43781, 140346,449891,1442157,4622932,14819125,47503729, 152276498,488132887,1564743865,5015895108, 16078800033,51541709869,165220529546,529625878779, 1697752526549]

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

AT&T Labs Research