A128321 as tables, graphs or sounds

A128321 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`17`
`4`		`98`
`5`		`622`
`6`		`4512`
`7`		`35373`
`8`		`300974`
`9`		`2722070`
`10`		`26118056`
`11`		`263266346`
`12`		`2780054884`
`13`		`30586452652`
`14`		`349724463584`
`15`		`4141218303165`
`16`		`50678688359190`
`17`		`639387728054310`
`18`		`8302396672724280`
`19`		`110754894628585950`

[1,1,4,17,98,622,4512,35373,300974,2722070, 26118056,263266346,2780054884,30586452652, 349724463584,4141218303165,50678688359190, 639387728054310,8302396672724280, 110754894628585950]

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research