A138340 as tables, graphs or sounds

A138340 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`-4`
`2`		`-32`
`3`		`-64`
`4`		`256`
`5`		`2048`
`6`		`4096`
`7`		`-16384`
`8`		`-131072`
`9`		`-262144`
`10`		`1048576`
`11`		`8388608`
`12`		`16777216`
`13`		`-67108864`
`14`		`-536870912`
`15`		`-1073741824`
`16`		`4294967296`
`17`		`34359738368`
`18`		`68719476736`
`19`		`-274877906944`
`20`		`-2199023255552`
`21`		`-4398046511104`
`22`		`17592186044416`

[1,-4,-32,-64,256,2048,4096,-16384,-131072, -262144,1048576,8388608,16777216,-67108864, -536870912,-1073741824,4294967296,34359738368, 68719476736,-274877906944,-2199023255552, -4398046511104,17592186044416]

Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research