A047068 as tables, graphs or sounds

A047068 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`7`
`3`		`12`
`4`		`30`
`5`		`127`
`6`		`574`
`7`		`3240`
`8`		`12980`
`9`		`51381`
`10`		`213637`
`11`		`866922`
`12`		`3562509`
`13`		`14354285`
`14`		`57298765`
`15`		`228921419`
`16`		`912494572`
`17`		`3639947154`
`18`		`14493582693`
`19`		`57604953252`
`20`		`228802279985`
`21`		`908249501738`
`22`		`3604924550020`
`23`		`14304563293997`
`24`		`56742981599768`

[1,3,7,12,30,127,574,3240,12980,51381,213637, 866922,3562509,14354285,57298765,228921419, 912494572,3639947154,14493582693,57604953252, 228802279985,908249501738,3604924550020, 14304563293997,56742981599768]

Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research