A089817 as tables, graphs or sounds

A089817 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`6`
`2`		`30`
`3`		`145`
`4`		`696`
`5`		`3336`
`6`		`15985`
`7`		`76590`
`8`		`366966`
`9`		`1758241`
`10`		`8424240`
`11`		`40362960`
`12`		`193390561`
`13`		`926589846`
`14`		`4439558670`
`15`		`21271203505`
`16`		`101916458856`
`17`		`488311090776`
`18`		`2339638995025`
`19`		`11209883884350`
`20`		`53709780426726`
`21`		`257339018249281`

[1,6,30,145,696,3336,15985,76590,366966,1758241, 8424240,40362960,193390561,926589846,4439558670, 21271203505,101916458856,488311090776, 2339638995025,11209883884350,53709780426726, 257339018249281]

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

AT&T Labs Research