A018081 as tables, graphs or sounds

A018081 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`3`
`3`		`6`
`4`		`13`
`5`		`24`
`6`		`46`
`7`		`89`
`8`		`169`
`9`		`320`
`10`		`609`
`11`		`1157`
`12`		`2197`
`13`		`4171`
`14`		`7921`
`15`		`15041`
`16`		`28561`
`17`		`54232`
`18`		`102978`
`19`		`195537`
`20`		`371293`
`21`		`705021`
`22`		`1338715`
`23`		`2541992`
`24`		`4826809`
`25`		`9165284`
`26`		`17403307`
`27`		`33045903`
`28`		`62748517`
`29`		`119148698`
`30`		`226242995`

[1,1,3,6,13,24,46,89,169,320,609,1157,2197,4171, 7921,15041,28561,54232,102978,195537,371293, 705021,1338715,2541992,4826809,9165284,17403307, 33045903,62748517,119148698,226242995]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research