A140721 as tables, graphs or sounds

A140721 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`-7`
`2`		`4`
`3`		`-28`
`4`		`16`
`5`		`-112`
`6`		`64`
`7`		`-448`
`8`		`256`
`9`		`-1792`
`10`		`1024`
`11`		`-7168`
`12`		`4096`
`13`		`-28672`
`14`		`16384`
`15`		`-114688`
`16`		`65536`
`17`		`-458752`
`18`		`262144`
`19`		`-1835008`
`20`		`1048576`
`21`		`-7340032`
`22`		`4194304`
`23`		`-29360128`
`24`		`16777216`
`25`		`-117440512`
`26`		`67108864`
`27`		`-469762048`
`28`		`268435456`
`29`		`-1879048192`
`30`		`1073741824`

[1,-7,4,-28,16,-112,64,-448,256,-1792,1024,-7168, 4096,-28672,16384,-114688,65536,-458752,262144, -1835008,1048576,-7340032,4194304,-29360128, 16777216,-117440512,67108864,-469762048,268435456, -1879048192,1073741824]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research