A156921 as tables, graphs or sounds

A156921 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`1`
`4`		`-6`
`5`		`1`
`6`		`7`
`7`		`-79`
`8`		`119`
`9`		`126`
`10`		`-270`
`11`		`1`
`12`		`28`
`13`		`-515`
`14`		`1654`
`15`		`8689`
`16`		`-65864`
`17`		`142371`
`18`		`-82242`
`19`		`-99090`
`20`		`113400`
`21`		`1`
`22`		`86`
`23`		`-2255`
`24`		`5784`
`25`		`300930`
`26`		`-3904584`
`27`		`20663714`
`28`		`-41517272`
`29`		`-80232259`
`30`		`657717054`

[1,1,1,1,-6,1,7,-79,119,126,-270,1,28,-515,1654, 8689,-65864,142371,-82242,-99090,113400,1,86, -2255,5784,300930,-3904584,20663714,-41517272, -80232259,657717054]

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

AT&T Labs Research