A000023 as tables, graphs or sounds

A000023 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`-1`
`2`		`2`
`3`		`-2`
`4`		`8`
`5`		`8`
`6`		`112`
`7`		`656`
`8`		`5504`
`9`		`49024`
`10`		`491264`
`11`		`5401856`
`12`		`64826368`
`13`		`842734592`
`14`		`11798300672`
`15`		`176974477312`
`16`		`2831591702528`
`17`		`48137058811904`
`18`		`866467058876416`
`19`		`16462874118127616`
`20`		`329257482363600896`
`21`		`6914407129633521664`
`22`		`152116956851941670912`
`23`		`3498690007594650042368`
`24`		`83968560182271617794048`
`25`		`2099214004556790411296768`
`26`		`54579564118476550760824832`
`27`		`1473648231198866870408052736`

[1,-1,2,-2,8,8,112,656,5504,49024,491264,5401856, 64826368,842734592,11798300672,176974477312, 2831591702528,48137058811904,866467058876416, 16462874118127616,329257482363600896, 6914407129633521664,152116956851941670912, 3498690007594650042368,83968560182271617794048, 2099214004556790411296768, 54579564118476550760824832, 1473648231198866870408052736]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research