A000117 as tables, graphs or sounds

A000117 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`4`
`3`		`8`
`4`		`18`
`5`		`44`
`6`		`122`
`7`		`362`
`8`		`1162`
`9`		`3914`
`10`		`13648`
`11`		`48734`
`12`		`176906`
`13`		`649532`
`14`		`2405236`
`15`		`8964800`
`16`		`33588234`
`17`		`126390032`
`18`		`477353376`
`19`		`1808676326`
`20`		`6872485104`
`21`		`26179922024`
`22`		`99957747388`
`23`		`382443112538`
`24`		`1466024067850`
`25`		`5629516646996`
`26`		`21651955485304`
`27`		`83400061453514`

[1,2,4,8,18,44,122,362,1162,3914,13648,48734, 176906,649532,2405236,8964800,33588234,126390032, 477353376,1808676326,6872485104,26179922024, 99957747388,382443112538,1466024067850, 5629516646996,21651955485304,83400061453514]

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

AT&T Labs Research