A027286 as tables, graphs or sounds

A027286 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`18`
`3`		`56`
`4`		`190`
`5`		`564`
`6`		`1722`
`7`		`4976`
`8`		`14454`
`9`		`40940`
`10`		`115698`
`11`		`322728`
`12`		`896558`
`13`		`2471588`
`14`		`6786090`
`15`		`18537184`
`16`		`50459366`
`17`		`136844892`
`18`		`370030434`
`19`		`997705240`
`20`		`2683514526`
`21`		`7201203988`
`22`		`19284880794`
`23`		`51546789456`
`24`		`137541880150`
`25`		`366412976332`

[1,4,18,56,190,564,1722,4976,14454,40940,115698, 322728,896558,2471588,6786090,18537184,50459366, 136844892,370030434,997705240,2683514526, 7201203988,19284880794,51546789456,137541880150, 366412976332]

Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

AT&T Labs Research