A006117 as tables, graphs or sounds

A006117 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`28`
`4`		`212`
`5`		`2664`
`6`		`56632`
`7`		`2052656`
`8`		`127902864`
`9`		`13721229088`
`10`		`2544826627424`
`11`		`815300788443072`
`12`		`452436459318538048`
`13`		`434188323928823259776`
`14`		`722197777341507864283008`
`15`		`2078153254879878944892861184`
`16`		`10366904326991986000747424911616`
`17`		`89478415088556766546699920236339712`
`18`		`1338962661056423158371347974009398601216`

[1,2,6,28,212,2664,56632,2052656,127902864, 13721229088,2544826627424,815300788443072, 452436459318538048,434188323928823259776, 722197777341507864283008, 2078153254879878944892861184, 10366904326991986000747424911616, 89478415088556766546699920236339712, 1338962661056423158371347974009398601216]

Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

AT&T Labs Research