A006252 as tables, graphs or sounds

A006252 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`14`
`6`		`38`
`7`		`216`
`8`		`600`
`9`		`6240`
`10`		`9552`
`11`		`319296`
`12`		`-519312`
`13`		`28108560`
`14`		`-176474352`
`15`		`3998454144`
`16`		`-43985078784`
`17`		`837126163584`
`18`		`-12437000028288`
`19`		`237195036797184`
`20`		`-4235955315745536`
`21`		`85886259443020800`

[1,1,1,2,4,14,38,216,600,6240,9552,319296,-519312, 28108560,-176474352,3998454144,-43985078784, 837126163584,-12437000028288,237195036797184, -4235955315745536,85886259443020800]

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research