A009199 as tables, graphs or sounds

A009199 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`2`
`3`		`-6`
`4`		`34`
`5`		`-220`
`6`		`1688`
`7`		`-14868`
`8`		`147684`
`9`		`-1631376`
`10`		`19821912`
`11`		`-262573080`
`12`		`3764276712`
`13`		`-58044604176`
`14`		`957653604672`
`15`		`-16828739439120`
`16`		`313742795670288`
`17`		`-6183918938706048`
`18`		`128463999017594016`
`19`		`-2804979941504113248`

[1,0,2,-6,34,-220,1688,-14868,147684,-1631376, 19821912,-262573080,3764276712,-58044604176, 957653604672,-16828739439120,313742795670288, -6183918938706048,128463999017594016, -2804979941504113248]

Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

AT&T Labs Research