A128648 as tables, graphs or sounds

A128648 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`4`
`4`		`12`
`5`		`60`
`6`		`5`
`7`		`80`
`8`		`720`
`9`		`7920`
`10`		`55440`
`11`		`55440`
`12`		`6160`
`13`		`6160`
`14`		`18480`
`15`		`425040`
`16`		`5525520`
`17`		`160240080`
`18`		`160240080`
`19`		`53413360`
`20`		`53413360`
`21`		`480720240`
`22`		`480720240`
`23`		`19709529840`
`24`		`19709529840`
`25`		`39419059680`
`26`		`197095298400`
`27`		`3350620072800`
`28`		`177582863858400`

[1,2,4,12,60,5,80,720,7920,55440,55440,6160,6160, 18480,425040,5525520,160240080,160240080,53413360, 53413360,480720240,480720240,19709529840, 19709529840,39419059680,197095298400, 3350620072800,177582863858400]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research