A001007 as tables, graphs or sounds

A001007 formatted as a simple table:

`n`		`a(n)`
`3`		`1`
`4`		`2`
`5`		`15`
`6`		`42`
`7`		`421`
`8`		`1331`
`9`		`15119`
`10`		`618765`
`11`		`2155578`
`12`		`98032875`
`13`		`1290154807`
`14`		`4682196239`
`15`		`63117678751`
`16`		`3186252107917`
`17`		`164886529617695`
`18`		`616630679090258`
`19`		`32763760653353135`
`20`		`467443761039641135`
`21`		`1768227793278781667`

[1,2,15,42,421,1331,15119,618765,2155578,98032875, 1290154807,4682196239,63117678751,3186252107917, 164886529617695,616630679090258,32763760653353135, 467443761039641135,1768227793278781667]

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

AT&T Labs Research