A000183 as tables, graphs or sounds

A000183 formatted as a simple table:

`n`		`a(n)`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`1`
`5`		`2`
`6`		`20`
`7`		`144`
`8`		`1265`
`9`		`12072`
`10`		`126565`
`11`		`1445100`
`12`		`17875140`
`13`		`238282730`
`14`		`3407118041`
`15`		`52034548064`
`16`		`845569542593`
`17`		`14570246018686`
`18`		`265397214435860`
`19`		`5095853023109484`
`20`		`102877234050493609`
`21`		`2178674876680100744`

[0,0,0,1,2,20,144,1265,12072,126565,1445100, 17875140,238282730,3407118041,52034548064, 845569542593,14570246018686,265397214435860, 5095853023109484,102877234050493609, 2178674876680100744]

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

AT&T Labs Research