A067687 as tables, graphs or sounds

A067687 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`5`
`4`		`12`
`5`		`29`
`6`		`69`
`7`		`165`
`8`		`393`
`9`		`937`
`10`		`2233`
`11`		`5322`
`12`		`12683`
`13`		`30227`
`14`		`72037`
`15`		`171680`
`16`		`409151`
`17`		`975097`
`18`		`2323870`
`19`		`5538294`
`20`		`13198973`
`21`		`31456058`
`22`		`74966710`
`23`		`178662171`
`24`		`425791279`
`25`		`1014754341`
`26`		`2418382956`
`27`		`5763538903`
`28`		`13735781840`
`29`		`32735391558`
`30`		`78015643589`

[1,1,2,5,12,29,69,165,393,937,2233,5322,12683, 30227,72037,171680,409151,975097,2323870,5538294, 13198973,31456058,74966710,178662171,425791279, 1014754341,2418382956,5763538903,13735781840, 32735391558,78015643589]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research