A001118 as tables, graphs or sounds

A001118 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`120`
`6`		`1800`
`7`		`16800`
`8`		`126000`
`9`		`834120`
`10`		`5103000`
`11`		`29607600`
`12`		`165528000`
`13`		`901020120`
`14`		`4809004200`
`15`		`25292030400`
`16`		`131542866000`
`17`		`678330198120`
`18`		`3474971465400`
`19`		`17710714165200`
`20`		`89904730860000`
`21`		`454951508208120`
`22`		`2296538629446600`

[1,0,0,0,0,120,1800,16800,126000,834120,5103000, 29607600,165528000,901020120,4809004200, 25292030400,131542866000,678330198120, 3474971465400,17710714165200,89904730860000, 454951508208120,2296538629446600]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research