A004167 as tables, graphs or sounds

A004167 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`9`
`3`		`72`
`4`		`18`
`5`		`342`
`6`		`927`
`7`		`7812`
`8`		`1656`
`9`		`38691`
`10`		`94095`
`11`		`741771`
`12`		`144135`
`13`		`3234951`
`14`		`9692874`
`15`		`70984341`
`16`		`12764034`
`17`		`361041921`
`18`		`984024783`
`19`		`7641622611`
`20`		`1044876843`
`21`		`30235306401`
`22`		`90695018313`
`23`		`72887134149`

[1,3,9,72,18,342,927,7812,1656,38691,94095,741771, 144135,3234951,9692874,70984341,12764034, 361041921,984024783,7641622611,1044876843, 30235306401,90695018313,72887134149]

Last modified December 9 14:43 EST 2009. Contains 170430 sequences.

AT&T Labs Research