A111538 as tables, graphs or sounds

A111538 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`14`
`3`		`84`
`4`		`600`
`5`		`4908`
`6`		`44952`
`7`		`454344`
`8`		`5016768`
`9`		`60062352`
`10`		`775089312`
`11`		`10728930912`
`12`		`158638465536`
`13`		`2496437377728`
`14`		`41674737264000`
`15`		`735831528563328`
`16`		`13704461848753152`
`17`		`268562085051533568`
`18`		`5525005742876244480`

[1,3,14,84,600,4908,44952,454344,5016768,60062352, 775089312,10728930912,158638465536,2496437377728, 41674737264000,735831528563328,13704461848753152, 268562085051533568,5525005742876244480]

Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research