A007831 as tables, graphs or sounds

A007831 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`0`
`3`		`1`
`4`		`1`
`5`		`16`
`6`		`61`
`7`		`806`
`8`		`6329`
`9`		`89272`
`10`		`1082281`
`11`		`17596162`
`12`		`284074165`
`13`		`5407229972`
`14`		`107539072733`
`15`		`2380274168806`
`16`		`55833426732529`
`17`		`1418006883852784`
`18`		`38195636967960913`
`19`		`1097755724834189834`
`20`		`33345176998235584301`

[1,0,1,1,16,61,806,6329,89272,1082281,17596162, 284074165,5407229972,107539072733,2380274168806, 55833426732529,1418006883852784,38195636967960913, 1097755724834189834,33345176998235584301]

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

AT&T Labs Research