A001471 as tables, graphs or sounds

A001471 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`0`
`3`		`2`
`4`		`8`
`5`		`20`
`6`		`80`
`7`		`350`
`8`		`1232`
`9`		`5768`
`10`		`31040`
`11`		`142010`
`12`		`776600`
`13`		`4874012`
`14`		`27027728`
`15`		`168369110`
`16`		`1191911840`
`17`		`7678566800`
`18`		`53474964992`
`19`		`418199988338`
`20`		`3044269834280`
`21`		`23364756531620`
`22`		`199008751634000`
`23`		`1605461415071822`

[0,0,0,2,8,20,80,350,1232,5768,31040,142010, 776600,4874012,27027728,168369110,1191911840, 7678566800,53474964992,418199988338,3044269834280, 23364756531620,199008751634000,1605461415071822]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research