A121497 as tables, graphs or sounds

A121497 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`1`
`3`		`4`
`4`		`10`
`5`		`21`
`6`		`41`
`7`		`78`
`8`		`148`
`9`		`282`
`10`		`537`
`11`		`1013`
`12`		`1882`
`13`		`3446`
`14`		`6267`
`15`		`11468`
`16`		`21416`
`17`		`41209`
`18`		`81771`
`19`		`166042`
`20`		`340994`
`21`		`700570`
`22`		`1429375`
`23`		`2886777`
`24`		`5771828`
`25`		`11453105`
`26`		`22638215`
`27`		`44742141`
`28`		`88681674`
`29`		`176545766`
`30`		`352992931`
`31`		`707922077`
`32`		`1421120880`
`33`		`2849433326`

[0,1,4,10,21,41,78,148,282,537,1013,1882,3446, 6267,11468,21416,41209,81771,166042,340994,700570, 1429375,2886777,5771828,11453105,22638215, 44742141,88681674,176545766,352992931,707922077, 1421120880,2849433326]

Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research