A032123 as tables, graphs or sounds

A032123 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`4`
`3`		`10`
`4`		`38`
`5`		`126`
`6`		`472`
`7`		`1716`
`8`		`6470`
`9`		`24310`
`10`		`92504`
`11`		`352716`
`12`		`1352540`
`13`		`5200300`
`14`		`20060016`
`15`		`77558760`
`16`		`300546630`
`17`		`1166803110`
`18`		`4537591960`
`19`		`17672631900`
`20`		`68923356788`
`21`		`269128937220`
`22`		`1052049834576`
`23`		`4116715363800`

[1,1,4,10,38,126,472,1716,6470,24310,92504,352716, 1352540,5200300,20060016,77558760,300546630, 1166803110,4537591960,17672631900,68923356788, 269128937220,1052049834576,4116715363800]

Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

AT&T Labs Research