A027643 as tables, graphs or sounds

A027643 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`-1`
`3`		`-1`
`4`		`7`
`5`		`1`
`6`		`-38`
`7`		`-5`
`8`		`11`
`9`		`7`
`10`		`-3263`
`11`		`-15`
`12`		`13399637`
`13`		`7601`
`14`		`-8364`
`15`		`-91`
`16`		`1437423473`
`17`		`3617`
`18`		`-177451280177`
`19`		`-745739`
`20`		`166416763419`
`21`		`3317609`
`22`		`-17730427802974`
`23`		`-5981591`
`24`		`51257173898346323`
`25`		`5436374093`
`26`		`-107154672791057`
`27`		`-213827575`

[1,1,-1,-1,7,1,-38,-5,11,7,-3263,-15,13399637, 7601,-8364,-91,1437423473,3617,-177451280177, -745739,166416763419,3317609,-17730427802974, -5981591,51257173898346323,5436374093, -107154672791057,-213827575]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research