A023001 as tables, graphs or sounds

A023001 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`1`
`2`		`9`
`3`		`73`
`4`		`585`
`5`		`4681`
`6`		`37449`
`7`		`299593`
`8`		`2396745`
`9`		`19173961`
`10`		`153391689`
`11`		`1227133513`
`12`		`9817068105`
`13`		`78536544841`
`14`		`628292358729`
`15`		`5026338869833`
`16`		`40210710958665`
`17`		`321685687669321`
`18`		`2573485501354569`
`19`		`20587884010836553`
`20`		`164703072086692425`

[0,1,9,73,585,4681,37449,299593,2396745,19173961, 153391689,1227133513,9817068105,78536544841, 628292358729,5026338869833,40210710958665, 321685687669321,2573485501354569, 20587884010836553,164703072086692425]

Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

AT&T Labs Research