A002431 as tables, graphs or sounds

A002431 formatted as a simple table:

`n`		`a(n)`
`-1`		`1`
`0`		`-1`
`1`		`-1`
`2`		`-2`
`3`		`-1`
`4`		`-2`
`5`		`-1382`
`6`		`-4`
`7`		`-3617`
`8`		`-87734`
`9`		`-349222`
`10`		`-310732`
`11`		`-472728182`
`12`		`-2631724`
`13`		`-13571120588`
`14`		`-13785346041608`
`15`		`-7709321041217`
`16`		`-303257395102`
`17`		`-52630543106106954746`
`18`		`-616840823966644`
`19`		`-522165436992898244102`
`20`		`-6080390575672283210764`
`21`		`-10121188937927645176372`

[1,-1,-1,-2,-1,-2,-1382,-4,-3617,-87734,-349222, -310732,-472728182,-2631724,-13571120588, -13785346041608,-7709321041217,-303257395102, -52630543106106954746,-616840823966644, -522165436992898244102,-6080390575672283210764, -10121188937927645176372]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research