A057009 as tables, graphs or sounds

A057009 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`7`
`3`		`41`
`4`		`235`
`5`		`1361`
`6`		`7987`
`7`		`47321`
`8`		`281995`
`9`		`1685921`
`10`		`10096867`
`11`		`60524201`
`12`		`362972155`
`13`		`2177309681`
`14`		`13062280147`
`15`		`78368930681`
`16`		`470199300715`
`17`		`2821152888641`
`18`		`16926788453827`
`19`		`101560343826761`
`20`		`609360901747675`
`21`		`3656161925798801`

[1,7,41,235,1361,7987,47321,281995,1685921, 10096867,60524201,362972155,2177309681, 13062280147,78368930681,470199300715, 2821152888641,16926788453827,101560343826761, 609360901747675,3656161925798801]

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

AT&T Labs Research