A002816 as tables, graphs or sounds

A002816 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`1`
`6`		`3`
`7`		`23`
`8`		`177`
`9`		`1553`
`10`		`14963`
`11`		`157931`
`12`		`1814453`
`13`		`22566237`
`14`		`302267423`
`15`		`4340478951`
`16`		`66541218865`
`17`		`1084982173641`
`18`		`18752743351339`
`19`		`342523093859011`
`20`		`6593167693927885`
`21`		`133408305489947029`
`22`		`2831112931136162775`

[1,0,0,0,1,3,23,177,1553,14963,157931,1814453, 22566237,302267423,4340478951,66541218865, 1084982173641,18752743351339,342523093859011, 6593167693927885,133408305489947029, 2831112931136162775]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research