A121050 as tables, graphs or sounds

A121050 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`1`
`5`		`2`
`6`		`3`
`7`		`8`
`8`		`22`
`9`		`66`
`10`		`231`
`11`		`898`
`12`		`3841`
`13`		`17916`
`14`		`90407`
`15`		`490428`
`16`		`2844978`
`17`		`17570216`
`18`		`115078238`
`19`		`796630973`
`20`		`5811215760`
`21`		`44551231394`
`22`		`358087648043`
`23`		`3010990488155`
`24`		`26433752431414`
`25`		`241852566790861`
`26`		`2302304545944429`
`27`		`22768248457537812`

[0,0,0,1,2,3,8,22,66,231,898,3841,17916,90407, 490428,2844978,17570216,115078238,796630973, 5811215760,44551231394,358087648043,3010990488155, 26433752431414,241852566790861,2302304545944429, 22768248457537812]

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

AT&T Labs Research