A011821 as tables, graphs or sounds

A011821 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`7`
`3`		`64`
`4`		`877`
`5`		`10742`
`6`		`102050`
`7`		`753994`
`8`		`4486435`
`9`		`22285884`
`10`		`95264798`
`11`		`359074648`
`12`		`1216716022`
`13`		`3763991016`
`14`		`10763615106`
`15`		`28741372964`
`16`		`72261453121`
`17`		`172248589406`
`18`		`391536067037`
`19`		`852876877928`
`20`		`1787799809335`
`21`		`3619382778994`

[2,7,64,877,10742,102050,753994,4486435,22285884, 95264798,359074648,1216716022,3763991016, 10763615106,28741372964,72261453121,172248589406, 391536067037,852876877928,1787799809335, 3619382778994]

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

AT&T Labs Research