A002494 as tables, graphs or sounds

A002494 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`1`
`3`		`2`
`4`		`7`
`5`		`23`
`6`		`122`
`7`		`888`
`8`		`11302`
`9`		`262322`
`10`		`11730500`
`11`		`1006992696`
`12`		`164072174728`
`13`		`50336940195360`
`14`		`29003653625867536`
`15`		`31397431814147073280`
`16`		`63969589218557753586160`
`17`		`245871863137828405125824848`

[1,0,1,2,7,23,122,888,11302,262322,11730500, 1006992696,164072174728,50336940195360, 29003653625867536,31397431814147073280, 63969589218557753586160, 245871863137828405125824848]

Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

AT&T Labs Research