A003472 as tables, graphs or sounds

A003472 formatted as a simple table:

`n`		`a(n)`
`4`		`1`
`5`		`10`
`6`		`60`
`7`		`280`
`8`		`1120`
`9`		`4032`
`10`		`13440`
`11`		`42240`
`12`		`126720`
`13`		`366080`
`14`		`1025024`
`15`		`2795520`
`16`		`7454720`
`17`		`19496960`
`18`		`50135040`
`19`		`127008768`
`20`		`317521920`
`21`		`784465920`
`22`		`1917583360`
`23`		`4642570240`
`24`		`11142168576`
`25`		`26528972800`
`26`		`62704844800`
`27`		`147220070400`

[1,10,60,280,1120,4032,13440,42240,126720,366080, 1025024,2795520,7454720,19496960,50135040, 127008768,317521920,784465920,1917583360, 4642570240,11142168576,26528972800,62704844800, 147220070400]

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research