A088991 as tables, graphs or sounds

A088991 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`4`
`3`		`32`
`4`		`432`
`5`		`7424`
`6`		`157120`
`7`		`3949056`
`8`		`114972928`
`9`		`3805503488`
`10`		`141137150976`
`11`		`5797706178560`
`12`		`261309106499584`
`13`		`12821127008550912`
`14`		`680286677982625792`
`15`		`38814037079505895424`
`16`		`2369659425449311272960`
`17`		`154142301601844298776576`
`18`		`10642813349855965483368448`

[1,0,4,32,432,7424,157120,3949056,114972928, 3805503488,141137150976,5797706178560, 261309106499584,12821127008550912, 680286677982625792,38814037079505895424, 2369659425449311272960,154142301601844298776576, 10642813349855965483368448]

Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

AT&T Labs Research