A001405 as tables, graphs or sounds

A001405 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`2`
`3`		`3`
`4`		`6`
`5`		`10`
`6`		`20`
`7`		`35`
`8`		`70`
`9`		`126`
`10`		`252`
`11`		`462`
`12`		`924`
`13`		`1716`
`14`		`3432`
`15`		`6435`
`16`		`12870`
`17`		`24310`
`18`		`48620`
`19`		`92378`
`20`		`184756`
`21`		`352716`
`22`		`705432`
`23`		`1352078`
`24`		`2704156`
`25`		`5200300`
`26`		`10400600`
`27`		`20058300`
`28`		`40116600`
`29`		`77558760`
`30`		`155117520`
`31`		`300540195`
`32`		`601080390`
`33`		`1166803110`

[1,1,2,3,6,10,20,35,70,126,252,462,924,1716,3432, 6435,12870,24310,48620,92378,184756,352716,705432, 1352078,2704156,5200300,10400600,20058300, 40116600,77558760,155117520,300540195,601080390, 1166803110]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research