A115156 as tables, graphs or sounds

A115156 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`6`
`3`		`28`
`4`		`54`
`5`		`405`
`6`		`486`
`7`		`2808`
`8`		`4860`
`9`		`21870`
`10`		`40824`
`11`		`192456`
`12`		`524160`
`13`		`708588`
`14`		`4059072`
`15`		`14348907`
`16`		`58576608`
`17`		`123731712`
`18`		`462944160`
`19`		`1837080000`
`20`		`3874204890`
`21`		`11809800000`
`22`		`48183984000`
`23`		`65086642152`
`24`		`339033848832`

[2,6,28,54,405,486,2808,4860,21870,40824,192456, 524160,708588,4059072,14348907,58576608,123731712, 462944160,1837080000,3874204890,11809800000, 48183984000,65086642152,339033848832]

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

AT&T Labs Research