A025171 as tables, graphs or sounds

A025171 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`-2`
`2`		`-12`
`3`		`56`
`4`		`80`
`5`		`-1056`
`6`		`832`
`7`		`15232`
`8`		`-43776`
`9`		`-156160`
`10`		`1012736`
`11`		`473088`
`12`		`-17149952`
`13`		`26730496`
`14`		`220938240`
`15`		`-869564416`
`16`		`-1795883008`
`17`		`17504796672`
`18`		`-6275465216`
`19`		`-267525816320`
`20`		`635459076096`
`21`		`3009494908928`

[1,-2,-12,56,80,-1056,832,15232,-43776,-156160, 1012736,473088,-17149952,26730496,220938240, -869564416,-1795883008,17504796672,-6275465216, -267525816320,635459076096,3009494908928]

Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

AT&T Labs Research