A028340 as tables, graphs or sounds

A028340 formatted as a simple table:

`n`		`a(n)`
`3`		`1`
`4`		`16`
`5`		`230`
`6`		`3480`
`7`		`57379`
`8`		`1038016`
`9`		`20570444`
`10`		`444647600`
`11`		`10431670821`
`12`		`264300628944`
`13`		`7198061846898`
`14`		`209814739262856`
`15`		`6520139954328519`
`16`		`215245451727154944`
`17`		`7524314127912551832`
`18`		`277705505168550027360`

[1,16,230,3480,57379,1038016,20570444,444647600, 10431670821,264300628944,7198061846898, 209814739262856,6520139954328519, 215245451727154944,7524314127912551832, 277705505168550027360]

Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research