A000139 as tables, graphs or sounds

A000139 formatted as a simple table:

`n`		`a(n)`
`0`		`2`
`1`		`1`
`2`		`2`
`3`		`6`
`4`		`22`
`5`		`91`
`6`		`408`
`7`		`1938`
`8`		`9614`
`9`		`49335`
`10`		`260130`
`11`		`1402440`
`12`		`7702632`
`13`		`42975796`
`14`		`243035536`
`15`		`1390594458`
`16`		`8038677054`
`17`		`46892282815`
`18`		`275750636070`
`19`		`1633292229030`
`20`		`9737153323590`
`21`		`58392041019795`
`22`		`352044769046880`
`23`		`2132866978427640`

[2,1,2,6,22,91,408,1938,9614,49335,260130,1402440, 7702632,42975796,243035536,1390594458,8038677054, 46892282815,275750636070,1633292229030, 9737153323590,58392041019795,352044769046880, 2132866978427640]

Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research