A140766 as tables, graphs or sounds

A140766 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`5`
`3`		`24`
`4`		`114`
`5`		`540`
`6`		`2556`
`7`		`12096`
`8`		`57240`
`9`		`270864`
`10`		`1281744`
`11`		`6065280`
`12`		`28701216`
`13`		`135815616`
`14`		`642686400`
`15`		`3041224704`
`16`		`14391229824`
`17`		`68100030720`
`18`		`322252805376`
`19`		`1524916647936`
`20`		`7215983055360`

[1,5,24,114,540,2556,12096,57240,270864,1281744, 6065280,28701216,135815616,642686400,3041224704, 14391229824,68100030720,322252805376, 1524916647936,7215983055360]

Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

AT&T Labs Research