A067550 as tables, graphs or sounds

A067550 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`2`
`3`		`10`
`4`		`90`
`5`		`1260`
`6`		`25200`
`7`		`680400`
`8`		`23814000`
`9`		`1047816000`
`10`		`56582064000`
`11`		`3677834160000`
`12`		`283193230320000`
`13`		`25487390728800000`
`14`		`2650688635795200000`
`15`		`315431947659628800000`
`16`		`42583312934049888000000`
`17`		`6472663565975582976000000`

[1,2,10,90,1260,25200,680400,23814000,1047816000, 56582064000,3677834160000,283193230320000, 25487390728800000,2650688635795200000, 315431947659628800000,42583312934049888000000, 6472663565975582976000000]

Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

AT&T Labs Research