A067546 as tables, graphs or sounds

A067546 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`15`
`4`		`105`
`5`		`840`
`6`		`7560`
`7`		`83160`
`8`		`1081080`
`9`		`15135120`
`10`		`227026800`
`11`		`3859455600`
`12`		`73329656400`
`13`		`1466593128000`
`14`		`30798455688000`
`15`		`708364480824000`
`16`		`17000747539776000`
`17`		`425018688494400000`
`18`		`11050485900854400000`

[1,3,15,105,840,7560,83160,1081080,15135120, 227026800,3859455600,73329656400,1466593128000, 30798455688000,708364480824000,17000747539776000, 425018688494400000,11050485900854400000]

Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

AT&T Labs Research