A007447 as tables, graphs or sounds

A007447 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`-1`
`3`		`3`
`4`		`-12`
`5`		`59`
`6`		`-354`
`7`		`2535`
`8`		`-21190`
`9`		`202731`
`10`		`-2183462`
`11`		`26130441`
`12`		`-343956264`
`13`		`4938891841`
`14`		`-76827253854`
`15`		`1287026203647`
`16`		`-23100628140676`
`17`		`442271719973507`
`18`		`-8996704216880580`
`19`		`193776558133638811`

[2,-1,3,-12,59,-354,2535,-21190,202731,-2183462, 26130441,-343956264,4938891841,-76827253854, 1287026203647,-23100628140676,442271719973507, -8996704216880580,193776558133638811]

Last modified December 4 08:07 EST 2009. Contains 170310 sequences.

AT&T Labs Research