A156290 as tables, graphs or sounds

A156290 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`-4`
`3`		`1`
`4`		`15`
`5`		`-6`
`6`		`1`
`7`		`-56`
`8`		`28`
`9`		`-8`
`10`		`1`
`11`		`210`
`12`		`-120`
`13`		`45`
`14`		`-10`
`15`		`1`
`16`		`-792`
`17`		`495`
`18`		`-220`
`19`		`66`
`20`		`-12`
`21`		`1`
`22`		`3003`
`23`		`-2002`
`24`		`1001`
`25`		`-364`
`26`		`91`
`27`		`-14`
`28`		`1`
`29`		`-11440`
`30`		`8008`
`31`		`-4368`
`32`		`1820`
`33`		`-560`
`34`		`120`
`35`		`-16`
`36`		`1`
`37`		`43758`
`38`		`-31824`
`39`		`18564`
`40`		`-8568`
`41`		`3060`
`42`		`-816`
`43`		`153`
`44`		`-18`
`45`		`1`
`46`		`-167960`
`47`		`125970`
`48`		`-77520`

[1,-4,1,15,-6,1,-56,28,-8,1,210,-120,45,-10,1, -792,495,-220,66,-12,1,3003,-2002,1001,-364,91, -14,1,-11440,8008,-4368,1820,-560,120,-16,1,43758, -31824,18564,-8568,3060,-816,153,-18,1,-167960, 125970,-77520]

Last modified December 3 22:15 EST 2009. Contains 170310 sequences.

AT&T Labs Research