A006880 as tables, graphs or sounds

A006880 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`4`
`2`		`25`
`3`		`168`
`4`		`1229`
`5`		`9592`
`6`		`78498`
`7`		`664579`
`8`		`5761455`
`9`		`50847534`
`10`		`455052511`
`11`		`4118054813`
`12`		`37607912018`
`13`		`346065536839`
`14`		`3204941750802`
`15`		`29844570422669`
`16`		`279238341033925`
`17`		`2623557157654233`
`18`		`24739954287740860`
`19`		`234057667276344607`
`20`		`2220819602560918840`

[0,4,25,168,1229,9592,78498,664579,5761455, 50847534,455052511,4118054813,37607912018, 346065536839,3204941750802,29844570422669, 279238341033925,2623557157654233, 24739954287740860,234057667276344607, 2220819602560918840]

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research