A022020 as tables, graphs or sounds

A022020 formatted as a simple table:

`n`		`a(n)`
`0`		`3`
`1`		`9`
`2`		`28`
`3`		`88`
`4`		`277`
`5`		`872`
`6`		`2746`
`7`		`8648`
`8`		`27236`
`9`		`85778`
`10`		`270153`
`11`		`850832`
`12`		`2679649`
`13`		`8439409`
`14`		`26579461`
`15`		`83710572`
`16`		`263641910`
`17`		`830325909`
`18`		`2615066456`
`19`		`8236010096`
`20`		`25938867499`
`21`		`81693057596`
`22`		`257287858063`
`23`		`810314166891`

[3,9,28,88,277,872,2746,8648,27236,85778,270153, 850832,2679649,8439409,26579461,83710572, 263641910,830325909,2615066456,8236010096, 25938867499,81693057596,257287858063, 810314166891]

Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

AT&T Labs Research