A091342 as tables, graphs or sounds

A091342 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`10`
`4`		`105`
`5`		`252`
`6`		`2310`
`7`		`25740`
`8`		`45045`
`9`		`680680`
`10`		`11639628`
`11`		`10581480`
`12`		`223092870`
`13`		`1029659400`
`14`		`2868336900`
`15`		`77636318760`
`16`		`4512611027925`
`17`		`4247163320400`
`18`		`4011209802600`
`19`		`140603459396400`
`20`		`133573286426580`
`21`		`5215718803323600`

[1,3,10,105,252,2310,25740,45045,680680,11639628, 10581480,223092870,1029659400,2868336900, 77636318760,4512611027925,4247163320400, 4011209802600,140603459396400,133573286426580, 5215718803323600]

Last modified December 5 08:23 EST 2009. Contains 170348 sequences.

AT&T Labs Research