A001444 as tables, graphs or sounds

A001444 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`15`
`4`		`45`
`5`		`126`
`6`		`378`
`7`		`1107`
`8`		`3321`
`9`		`9882`
`10`		`29646`
`11`		`88695`
`12`		`266085`
`13`		`797526`
`14`		`2392578`
`15`		`7175547`
`16`		`21526641`
`17`		`64573362`
`18`		`193720086`
`19`		`581140575`
`20`		`1743421725`
`21`		`5230206126`
`22`		`15690618378`
`23`		`47071677987`
`24`		`141215033961`

[1,2,6,15,45,126,378,1107,3321,9882,29646,88695, 266085,797526,2392578,7175547,21526641,64573362, 193720086,581140575,1743421725,5230206126, 15690618378,47071677987,141215033961]

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

AT&T Labs Research