A020134 as tables, graphs or sounds

A020134 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`2`
`4`		`4`
`5`		`15`
`6`		`80`
`7`		`506`
`8`		`3711`
`9`		`30921`
`10`		`288592`
`11`		`2982110`
`12`		`33797241`
`13`		`416832634`
`14`		`5557768441`
`15`		`79661347642`
`16`		`1221473997165`
`17`		`19950741953682`
`18`		`345812860530488`
`19`		`6339902443058942`
`20`		`122571447232472866`
`21`		`2492286093726948269`

[1,1,1,2,4,15,80,506,3711,30921,288592,2982110, 33797241,416832634,5557768441,79661347642, 1221473997165,19950741953682,345812860530488, 6339902443058942,122571447232472866, 2492286093726948269]

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research