A056468 as tables, graphs or sounds

A056468 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`66`
`3`		`924`
`4`		`7400`
`5`		`44040`
`6`		`217392`
`7`		`942592`
`8`		`3714048`
`9`		`13593600`
`10`		`46914560`
`11`		`154328064`
`12`		`487778304`
`13`		`1490384896`
`14`		`4423372800`
`15`		`12801146880`
`16`		`36235378688`
`17`		`100580917248`
`18`		`274361352192`
`19`		`736775372800`
`20`		`1950815354880`
`21`		`5099601002496`

[0,1,66,924,7400,44040,217392,942592,3714048, 13593600,46914560,154328064,487778304,1490384896, 4423372800,12801146880,36235378688,100580917248, 274361352192,736775372800,1950815354880, 5099601002496]

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research