A002996 as tables, graphs or sounds

A002996 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`1`
`3`		`4`
`4`		`12`
`5`		`41`
`6`		`126`
`7`		`428`
`8`		`1416`
`9`		`4857`
`10`		`16753`
`11`		`58785`
`12`		`207868`
`13`		`742899`
`14`		`2674010`
`15`		`9694799`
`16`		`35356240`
`17`		`129644789`
`18`		`477633711`
`19`		`1767263189`
`20`		`6564103612`
`21`		`24466266587`
`22`		`91482504853`
`23`		`343059613649`
`24`		`1289903937896`
`25`		`4861946401410`

[1,1,4,12,41,126,428,1416,4857,16753,58785,207868, 742899,2674010,9694799,35356240,129644789, 477633711,1767263189,6564103612,24466266587, 91482504853,343059613649,1289903937896, 4861946401410]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research