A113180 as tables, graphs or sounds

A113180 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`4`
`3`		`8`
`4`		`20`
`5`		`56`
`6`		`160`
`7`		`448`
`8`		`1240`
`9`		`3440`
`10`		`9632`
`11`		`27200`
`12`		`77216`
`13`		`219840`
`14`		`627200`
`15`		`1793024`
`16`		`5136480`
`17`		`14743232`
`18`		`42390400`
`19`		`122064640`
`20`		`351951232`
`21`		`1015990528`
`22`		`2936079360`
`23`		`8493340672`
`24`		`24591589120`
`25`		`71262291456`
`26`		`206666232832`
`27`		`599778166784`

[1,2,4,8,20,56,160,448,1240,3440,9632,27200,77216, 219840,627200,1793024,5136480,14743232,42390400, 122064640,351951232,1015990528,2936079360, 8493340672,24591589120,71262291456,206666232832, 599778166784]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research