A054972 as tables, graphs or sounds

A054972 formatted as a simple table:

`n`		`a(n)`
`2`		`4`
`3`		`30`
`4`		`300`
`5`		`3570`
`6`		`64680`
`7`		`1231230`
`8`		`29609580`
`9`		`746876130`
`10`		`22309287000`
`11`		`834590426670`
`12`		`32089678420800`
`13`		`1461885412557570`
`14`		`72411562719475980`
`15`		`3676255934199278430`
`16`		`201683848689025182480`
`17`		`12416469379809407042130`

[4,30,300,3570,64680,1231230,29609580,746876130, 22309287000,834590426670,32089678420800, 1461885412557570,72411562719475980, 3676255934199278430,201683848689025182480, 12416469379809407042130]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research