A018190 as tables, graphs or sounds

A018190 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`3`
`4`		`7`
`5`		`22`
`6`		`81`
`7`		`331`
`8`		`1435`
`9`		`6505`
`10`		`30086`
`11`		`141229`
`12`		`669584`
`13`		`3198256`
`14`		`15367577`
`15`		`74207910`
`16`		`359863778`
`17`		`1751594643`
`18`		`8553649747`
`19`		`41892642772`
`20`		`205714411986`
`21`		`1012565172403`
`22`		`4994807695197`
`23`		`24687124900540`
`24`		`122238208783203`

[1,1,3,7,22,81,331,1435,6505,30086,141229,669584, 3198256,15367577,74207910,359863778,1751594643, 8553649747,41892642772,205714411986,1012565172403, 4994807695197,24687124900540,122238208783203]

Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

AT&T Labs Research