A097971 as tables, graphs or sounds

A097971 formatted as a simple table:

`n`		`a(n)`
`2`		`2`
`3`		`10`
`4`		`56`
`5`		`360`
`6`		`2640`
`7`		`21840`
`8`		`201600`
`9`		`2056320`
`10`		`22982400`
`11`		`279417600`
`12`		`3672345600`
`13`		`51891840000`
`14`		`784604620800`
`15`		`12640852224000`
`16`		`216202162176000`
`17`		`3912561709056000`
`18`		`74694359900160000`
`19`		`1500289571708928000`

[2,10,56,360,2640,21840,201600,2056320,22982400, 279417600,3672345600,51891840000,784604620800, 12640852224000,216202162176000,3912561709056000, 74694359900160000,1500289571708928000]

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

AT&T Labs Research