A080498 as tables, graphs or sounds

A080498 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`1`
`5`		`1`
`6`		`2`
`7`		`3`
`8`		`8`
`9`		`15`
`10`		`48`
`11`		`210`
`12`		`1152`
`13`		`3780`
`14`		`19200`
`15`		`62370`
`16`		`322560`
`17`		`2162160`
`18`		`17418240`
`19`		`81081000`
`20`		`567705600`
`21`		`2481078600`
`22`		`16907304960`
`23`		`146659312800`
`24`		`1504935936000`
`25`		`8799558768000`
`26`		`76435881984000`
`27`		`819678899239200`

[1,1,1,1,1,2,3,8,15,48,210,1152,3780,19200,62370, 322560,2162160,17418240,81081000,567705600, 2481078600,16907304960,146659312800,1504935936000, 8799558768000,76435881984000,819678899239200]

Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

AT&T Labs Research