A138477 as tables, graphs or sounds

A138477 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`1`
`3`		`2`
`4`		`3`
`5`		`6`
`6`		`15`
`7`		`30`
`8`		`55`
`9`		`110`
`10`		`231`
`11`		`462`
`12`		`903`
`13`		`1806`
`14`		`3655`
`15`		`7310`
`16`		`14535`
`17`		`29070`
`18`		`58311`
`19`		`116622`
`20`		`232903`
`21`		`465806`
`22`		`932295`
`23`		`1864590`
`24`		`3727815`
`25`		`7455630`
`26`		`14913991`
`27`		`29827982`
`28`		`59650503`

[0,0,1,2,3,6,15,30,55,110,231,462,903,1806,3655, 7310,14535,29070,58311,116622,232903,465806, 932295,1864590,3727815,7455630,14913991,29827982, 59650503]

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research