A011800 as tables, graphs or sounds

A011800 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`7`
`4`		`34`
`5`		`206`
`6`		`1486`
`7`		`12412`
`8`		`117692`
`9`		`1248004`
`10`		`14625856`
`11`		`187638716`
`12`		`2614602112`
`13`		`39310384192`
`14`		`634148436104`
`15`		`10923398137576`
`16`		`200069534481616`
`17`		`3882002527006352`
`18`		`79535575126745632`
`19`		`1715658099715217584`

[1,1,2,7,34,206,1486,12412,117692,1248004, 14625856,187638716,2614602112,39310384192, 634148436104,10923398137576,200069534481616, 3882002527006352,79535575126745632, 1715658099715217584]

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

AT&T Labs Research