A115428 as tables, graphs or sounds

A115428 formatted as a simple table:

`n`		`a(n)`
`1`		`1`
`2`		`4`
`3`		`20`
`4`		`31`
`5`		`14564`
`6`		`38239`
`7`		`69919`
`8`		`120395`
`9`		`426436`
`10`		`902596`
`11`		`7478020`
`12`		`9090220`
`13`		`6671332084`
`14`		`8114264059`
`15`		`8482227259`
`16`		`9900250996`
`17`		`2244338786836`
`18`		`2490577152964`
`19`		`2509440638591`
`20`		`2769448208395`
`21`		`7012067592220`

[1,4,20,31,14564,38239,69919,120395,426436,902596, 7478020,9090220,6671332084,8114264059,8482227259, 9900250996,2244338786836,2490577152964, 2509440638591,2769448208395,7012067592220]

Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

AT&T Labs Research