A122020 as tables, graphs or sounds

A122020 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`6`
`3`		`66`
`4`		`1140`
`5`		`28280`
`6`		`948570`
`7`		`41173776`
`8`		`2238150600`
`9`		`148570107264`
`10`		`11804909261310`
`11`		`1104566746764800`
`12`		`120062928157552380`
`13`		`14986973664751315968`
`14`		`2127288759957421124610`
`15`		`340440417300990616995840`

[1,6,66,1140,28280,948570,41173776,2238150600, 148570107264,11804909261310,1104566746764800, 120062928157552380,14986973664751315968, 2127288759957421124610,340440417300990616995840]

Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

AT&T Labs Research