A002426 as tables, graphs or sounds

A002426 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`3`
`3`		`7`
`4`		`19`
`5`		`51`
`6`		`141`
`7`		`393`
`8`		`1107`
`9`		`3139`
`10`		`8953`
`11`		`25653`
`12`		`73789`
`13`		`212941`
`14`		`616227`
`15`		`1787607`
`16`		`5196627`
`17`		`15134931`
`18`		`44152809`
`19`		`128996853`
`20`		`377379369`
`21`		`1105350729`
`22`		`3241135527`
`23`		`9513228123`
`24`		`27948336381`
`25`		`82176836301`
`26`		`241813226151`

[1,1,3,7,19,51,141,393,1107,3139,8953,25653,73789, 212941,616227,1787607,5196627,15134931,44152809, 128996853,377379369,1105350729,3241135527, 9513228123,27948336381,82176836301,241813226151]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research