A110609 as tables, graphs or sounds

A110609 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`8`
`3`		`45`
`4`		`224`
`5`		`1050`
`6`		`4752`
`7`		`21021`
`8`		`91520`
`9`		`393822`
`10`		`1679600`
`11`		`7113106`
`12`		`29953728`
`13`		`125550100`
`14`		`524190240`
`15`		`2181340125`
`16`		`9051563520`
`17`		`37467344310`
`18`		`154754938800`
`19`		`637982011590`
`20`		`2625648168000`
`21`		`10789623755820`
`22`		`44277560801760`

[0,1,8,45,224,1050,4752,21021,91520,393822, 1679600,7113106,29953728,125550100,524190240, 2181340125,9051563520,37467344310,154754938800, 637982011590,2625648168000,10789623755820, 44277560801760]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research