A001420 as tables, graphs or sounds

A001420 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`3`
`3`		`6`
`4`		`14`
`5`		`36`
`6`		`94`
`7`		`250`
`8`		`675`
`9`		`1838`
`10`		`5053`
`11`		`14016`
`12`		`39169`
`13`		`110194`
`14`		`311751`
`15`		`886160`
`16`		`2529260`
`17`		`7244862`
`18`		`20818498`
`19`		`59994514`
`20`		`173338962`
`21`		`501994070`
`22`		`1456891547`
`23`		`4236446214`
`24`		`12341035217`
`25`		`36009329450`
`26`		`105229462401`
`27`		`307942754342`
`28`		`902338712971`
`29`		`2647263986022`
`30`		`7775314024683`
`31`		`22861250676074`

[2,3,6,14,36,94,250,675,1838,5053,14016,39169, 110194,311751,886160,2529260,7244862,20818498, 59994514,173338962,501994070,1456891547, 4236446214,12341035217,36009329450,105229462401, 307942754342,902338712971,2647263986022, 7775314024683,22861250676074]

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

AT&T Labs Research