A020135 as tables, graphs or sounds

A020135 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`7`
`5`		`30`
`6`		`163`
`7`		`1056`
`8`		`7919`
`9`		`67304`
`10`		`639384`
`11`		`6713531`
`12`		`77205602`
`13`		`965070018`
`14`		`13028445232`
`15`		`188912455861`
`16`		`2928143065835`
`17`		`48314360586265`
`18`		`845501310259628`
`19`		`15641774239803108`
`20`		`305014597676160594`
`21`		`6252799252361292174`

[1,1,1,2,7,30,163,1056,7919,67304,639384,6713531, 77205602,965070018,13028445232,188912455861, 2928143065835,48314360586265,845501310259628, 15641774239803108,305014597676160594, 6252799252361292174]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research