A134968 as tables, graphs or sounds

A134968 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`16`
`4`		`54`
`5`		`168`
`6`		`462`
`7`		`1212`
`8`		`2937`
`9`		`6832`
`10`		`15135`
`11`		`32430`
`12`		`66898`
`13`		`134710`
`14`		`263466`
`15`		`504308`
`16`		`944208`
`17`		`1736575`
`18`		`3134832`
`19`		`5574947`
`20`		`9760954`
`21`		`16868418`
`22`		`28771587`
`23`		`48513127`
`24`		`80867486`
`25`		`133455462`
`26`		`218041708`
`27`		`353039664`
`28`		`566580113`
`29`		`901958971`

[1,4,16,54,168,462,1212,2937,6832,15135,32430, 66898,134710,263466,504308,944208,1736575,3134832, 5574947,9760954,16868418,28771587,48513127, 80867486,133455462,218041708,353039664,566580113, 901958971]

Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

AT&T Labs Research