A081561 as tables, graphs or sounds

A081561 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`8`
`3`		`32`
`4`		`176`
`5`		`992`
`6`		`6848`
`7`		`48512`
`8`		`398336`
`9`		`3356672`
`10`		`31751168`
`11`		`307914752`
`12`		`3282292736`
`13`		`35827392512`
`14`		`423577223168`
`15`		`5121571684352`
`16`		`66347485822976`
`17`		`877984005619712`
`18`		`12344359378485248`
`19`		`177098976447168512`

[1,2,8,32,176,992,6848,48512,398336,3356672, 31751168,307914752,3282292736,35827392512, 423577223168,5121571684352,66347485822976, 877984005619712,12344359378485248, 177098976447168512]

Last modified December 5 08:19 EST 2009. Contains 170347 sequences.

AT&T Labs Research