A048611 as tables, graphs or sounds

A048611 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`6`
`2`		`20`
`3`		`56`
`4`		`156`
`5`		`340`
`6`		`2444`
`7`		`4440`
`8`		`167000`
`9`		`55556`
`10`		`267444`
`11`		`333400`
`12`		`132687920`
`13`		`5555556`
`14`		`10731400`
`15`		`40938800`
`16`		`2682647040`
`17`		`333334000`
`18`		`555555555555555556`
`19`		`3334367856`
`20`		`11034444280`
`21`		`35595935980`
`22`		`5555555555555555555556`

[1,6,20,56,156,340,2444,4440,167000,55556,267444, 333400,132687920,5555556,10731400,40938800, 2682647040,333334000,555555555555555556, 3334367856,11034444280,35595935980, 5555555555555555555556]

Last modified December 5 23:38 EST 2009. Contains 170428 sequences.

AT&T Labs Research