A008551 as tables, graphs or sounds

A008551 formatted as a simple table:

`n`		`a(n)`
`0`		`2`
`1`		`0`
`2`		`0`
`3`		`128`
`4`		`0`
`5`		`384`
`6`		`3648`
`7`		`1920`
`8`		`20448`
`9`		`71680`
`10`		`125952`
`11`		`537600`
`12`		`1445440`
`13`		`3756288`
`14`		`11173440`
`15`		`29955072`
`16`		`79741908`
`17`		`214759680`
`18`		`564284736`
`19`		`1466972160`
`20`		`3794966880`
`21`		`9719376896`
`22`		`24675685440`
`23`		`62292331392`
`24`		`156254486400`
`25`		`389861188608`

[2,0,0,128,0,384,3648,1920,20448,71680,125952, 537600,1445440,3756288,11173440,29955072,79741908, 214759680,564284736,1466972160,3794966880, 9719376896,24675685440,62292331392,156254486400, 389861188608]

Last modified December 7 23:50 EST 2009. Contains 170430 sequences.

AT&T Labs Research