A007501 as tables, graphs or sounds

A007501 formatted as a simple table:

`n`		`a(n)`
`0`		`2`
`1`		`3`
`2`		`6`
`3`		`21`
`4`		`231`
`5`		`26796`
`6`		`359026206`
`7`		`64449908476890321`
`8`		`2076895351339769460477611370186681`
`9`		`2156747150208372213435450937462082366919951682912789656986079991221`

[2,3,6,21,231,26796,359026206,64449908476890321, 2076895351339769460477611370186681, 2156747150208372213435450937462082366919951682912789656986079991221]

Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

AT&T Labs Research