A006520 as tables, graphs or sounds

A006520 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`3`
`2`		`4`
`3`		`8`
`4`		`9`
`5`		`11`
`6`		`12`
`7`		`20`
`8`		`21`
`9`		`23`
`10`		`24`
`11`		`28`
`12`		`29`
`13`		`31`
`14`		`32`
`15`		`48`
`16`		`49`
`17`		`51`
`18`		`52`
`19`		`56`
`20`		`57`
`21`		`59`
`22`		`60`
`23`		`68`
`24`		`69`
`25`		`71`
`26`		`72`
`27`		`76`
`28`		`77`
`29`		`79`
`30`		`80`
`31`		`112`
`32`		`113`
`33`		`115`
`34`		`116`
`35`		`120`
`36`		`121`
`37`		`123`
`38`		`124`
`39`		`132`
`40`		`133`
`41`		`135`
`42`		`136`
`43`		`140`
`44`		`141`
`45`		`143`
`46`		`144`
`47`		`160`
`48`		`161`
`49`		`163`
`50`		`164`
`51`		`168`
`52`		`169`
`53`		`171`
`54`		`172`
`55`		`180`
`56`		`181`
`57`		`183`
`58`		`184`
`59`		`188`
`60`		`189`

[1,3,4,8,9,11,12,20,21,23,24,28,29,31,32,48,49,51, 52,56,57,59,60,68,69,71,72,76,77,79,80,112,113, 115,116,120,121,123,124,132,133,135,136,140,141, 143,144,160,161,163,164,168,169,171,172,180,181, 183,184,188,189]

Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

AT&T Labs Research