A002906 as tables, graphs or sounds

A002906 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`12`
`3`		`36`
`4`		`100`
`5`		`276`
`6`		`740`
`7`		`1972`
`8`		`5172`
`9`		`13492`
`10`		`34876`
`11`		`89764`
`12`		`229628`
`13`		`585508`
`14`		`1486308`
`15`		`3763460`
`16`		`9497380`
`17`		`23918708`
`18`		`60080156`
`19`		`150660388`
`20`		`377009364`
`21`		`942106116`
`22`		`2350157268`
`23`		`5855734740`
`24`		`14569318492`
`25`		`36212402548`
`26`		`89896870204`

[1,4,12,36,100,276,740,1972,5172,13492,34876, 89764,229628,585508,1486308,3763460,9497380, 23918708,60080156,150660388,377009364,942106116, 2350157268,5855734740,14569318492,36212402548, 89896870204]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research