A001938 as tables, graphs or sounds

A001938 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`-4`
`2`		`14`
`3`		`-40`
`4`		`101`
`5`		`-236`
`6`		`518`
`7`		`-1080`
`8`		`2162`
`9`		`-4180`
`10`		`7840`
`11`		`-14328`
`12`		`25591`
`13`		`-44776`
`14`		`76918`
`15`		`-129952`
`16`		`216240`
`17`		`-354864`
`18`		`574958`
`19`		`-920600`
`20`		`1457946`
`21`		`-2285452`
`22`		`3548550`
`23`		`-5460592`
`24`		`8332425`
`25`		`-12614088`
`26`		`18953310`
`27`		`-28276968`
`28`		`41904208`
`29`		`-61702876`
`30`		`90304598`
`31`		`-131399624`

[1,-4,14,-40,101,-236,518,-1080,2162,-4180,7840, -14328,25591,-44776,76918,-129952,216240,-354864, 574958,-920600,1457946,-2285452,3548550,-5460592, 8332425,-12614088,18953310,-28276968,41904208, -61702876,90304598,-131399624]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research