A137778 as tables, graphs or sounds

A137778 formatted as a simple table:

`n`		`a(n)`
`1`		`-1`
`2`		`-2`
`3`		`-2`
`4`		`-4`
`5`		`-8`
`6`		`-4`
`7`		`-12`
`8`		`-36`
`9`		`-36`
`10`		`-12`
`11`		`-48`
`12`		`-192`
`13`		`-288`
`14`		`-192`
`15`		`-48`
`16`		`-240`
`17`		`-1200`
`18`		`-2400`
`19`		`-2400`
`20`		`-1200`
`21`		`-240`
`22`		`-1440`
`23`		`-8640`
`24`		`-21600`
`25`		`-28800`
`26`		`-21600`
`27`		`-8640`
`28`		`-1440`
`29`		`-10080`
`30`		`-70560`
`31`		`-211680`
`32`		`-352800`
`33`		`-352800`
`34`		`-211680`
`35`		`-70560`
`36`		`-10080`
`37`		`-80640`
`38`		`-645120`
`39`		`-2257920`
`40`		`-4515840`
`41`		`-5644800`
`42`		`-4515840`

[-1,-2,-2,-4,-8,-4,-12,-36,-36,-12,-48,-192,-288, -192,-48,-240,-1200,-2400,-2400,-1200,-240,-1440, -8640,-21600,-28800,-21600,-8640,-1440,-10080, -70560,-211680,-352800,-352800,-211680,-70560, -10080,-80640,-645120,-2257920,-4515840,-5644800, -4515840]

Last modified December 7 08:40 EST 2009. Contains 170430 sequences.

AT&T Labs Research