A001655 as tables, graphs or sounds

A001655 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`15`
`3`		`60`
`4`		`260`
`5`		`1092`
`6`		`4641`
`7`		`19635`
`8`		`83215`
`9`		`352440`
`10`		`1493064`
`11`		`6324552`
`12`		`26791505`
`13`		`113490195`
`14`		`480752895`
`15`		`2036500788`
`16`		`8626757644`
`17`		`36543528780`
`18`		`154800876945`
`19`		`655747029795`
`20`		`2777789007071`
`21`		`11766903040368`
`22`		`49845401197200`

[1,3,15,60,260,1092,4641,19635,83215,352440, 1493064,6324552,26791505,113490195,480752895, 2036500788,8626757644,36543528780,154800876945, 655747029795,2777789007071,11766903040368, 49845401197200]

Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

AT&T Labs Research