A053499 as tables, graphs or sounds

A053499 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`1`
`2`		`1`
`3`		`3`
`4`		`9`
`5`		`21`
`6`		`81`
`7`		`351`
`8`		`1233`
`9`		`46089`
`10`		`434241`
`11`		`2359611`
`12`		`27387801`
`13`		`264333213`
`14`		`1722161169`
`15`		`16514298711`
`16`		`163094452641`
`17`		`1216239520401`
`18`		`50883607918593`
`19`		`866931703203699`
`20`		`8473720481213481`
`21`		`166915156382509221`
`22`		`2699805625227141201`

[1,1,1,3,9,21,81,351,1233,46089,434241,2359611, 27387801,264333213,1722161169,16514298711, 163094452641,1216239520401,50883607918593, 866931703203699,8473720481213481, 166915156382509221,2699805625227141201]

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

AT&T Labs Research