A004121 as tables, graphs or sounds

A004121 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`16`
`3`		`208`
`4`		`3968`
`5`		`109568`
`6`		`4793344`
`7`		`410662912`
`8`		`82657083392`
`9`		`38274970222592`
`10`		`37590755515826176`
`11`		`75458309991776124928`
`12`		`305873605165090925969408`
`13`		`2491832958314452159507202048`
`14`		`40704585435508852018947014262784`

[2,16,208,3968,109568,4793344,410662912, 82657083392,38274970222592,37590755515826176, 75458309991776124928,305873605165090925969408, 2491832958314452159507202048, 40704585435508852018947014262784]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research