A087206 as tables, graphs or sounds

A087206 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`4`
`2`		`12`
`3`		`40`
`4`		`128`
`5`		`416`
`6`		`1344`
`7`		`4352`
`8`		`14080`
`9`		`45568`
`10`		`147456`
`11`		`477184`
`12`		`1544192`
`13`		`4997120`
`14`		`16171008`
`15`		`52330496`
`16`		`169345024`
`17`		`548012032`
`18`		`1773404160`
`19`		`5738856448`
`20`		`18571329536`
`21`		`60098084864`
`22`		`194481487872`
`23`		`629355315200`
`24`		`2036636581888`

[1,4,12,40,128,416,1344,4352,14080,45568,147456, 477184,1544192,4997120,16171008,52330496, 169345024,548012032,1773404160,5738856448, 18571329536,60098084864,194481487872,629355315200, 2036636581888]

Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research