A053496 as tables, graphs or sounds

A053496 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`18`
`5`		`66`
`6`		`396`
`7`		`2052`
`8`		`12636`
`9`		`91548`
`10`		`625176`
`11`		`4673736`
`12`		`43575192`
`13`		`377205336`
`14`		`3624289488`
`15`		`38829340656`
`16`		`397695226896`
`17`		`4338579616272`
`18`		`54018173703456`
`19`		`641634784488288`
`20`		`8208962893594656`
`21`		`113809776294348576`
`22`		`1526808627197721792`

[1,1,2,6,18,66,396,2052,12636,91548,625176, 4673736,43575192,377205336,3624289488,38829340656, 397695226896,4338579616272,54018173703456, 641634784488288,8208962893594656, 113809776294348576,1526808627197721792]

Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

AT&T Labs Research