A137287 as tables, graphs or sounds

A137287 formatted as a simple table:

`n`		`a(n)`
`1`		`2`
`2`		`21`
`3`		`221`
`4`		`2221`
`5`		`222221`
`6`		`2222221`
`7`		`222222221`
`8`		`2222222221`
`9`		`222222222221`
`10`		`222222222222221`
`11`		`2222222222222221`
`12`		`2222222222222222221`
`13`		`222222222222222222221`
`14`		`2222222222222222222221`

[2,21,221,2221,222221,2222221,222222221, 2222222221,222222222221,222222222222221, 2222222222222221,2222222222222222221, 222222222222222222221,2222222222222222222221]

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research