A026644 as tables, graphs or sounds

A026644 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`4`
`3`		`10`
`4`		`20`
`5`		`42`
`6`		`84`
`7`		`170`
`8`		`340`
`9`		`682`
`10`		`1364`
`11`		`2730`
`12`		`5460`
`13`		`10922`
`14`		`21844`
`15`		`43690`
`16`		`87380`
`17`		`174762`
`18`		`349524`
`19`		`699050`
`20`		`1398100`
`21`		`2796202`
`22`		`5592404`
`23`		`11184810`
`24`		`22369620`
`25`		`44739242`
`26`		`89478484`
`27`		`178956970`
`28`		`357913940`
`29`		`715827882`
`30`		`1431655764`

[1,2,4,10,20,42,84,170,340,682,1364,2730,5460, 10922,21844,43690,87380,174762,349524,699050, 1398100,2796202,5592404,11184810,22369620, 44739242,89478484,178956970,357913940,715827882, 1431655764]

Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

AT&T Labs Research