A005566 as tables, graphs or sounds

A005566 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`18`
`4`		`60`
`5`		`200`
`6`		`700`
`7`		`2450`
`8`		`8820`
`9`		`31752`
`10`		`116424`
`11`		`426888`
`12`		`1585584`
`13`		`5889312`
`14`		`22084920`
`15`		`82818450`
`16`		`312869700`
`17`		`1181952200`
`18`		`4491418360`
`19`		`17067389768`
`20`		`65166397296`
`21`		`248817153312`
`22`		`953799087696`
`23`		`3656229836168`
`24`		`14062422446800`

[1,2,6,18,60,200,700,2450,8820,31752,116424, 426888,1585584,5889312,22084920,82818450, 312869700,1181952200,4491418360,17067389768, 65166397296,248817153312,953799087696, 3656229836168,14062422446800]

Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

AT&T Labs Research