A020883 as tables, graphs or sounds

A020883 formatted as a simple table:

`n`		`a(n)`
`0`		`4`
`1`		`12`
`2`		`15`
`3`		`21`
`4`		`24`
`5`		`35`
`6`		`40`
`7`		`45`
`8`		`55`
`9`		`56`
`10`		`60`
`11`		`63`
`12`		`72`
`13`		`77`
`14`		`80`
`15`		`84`
`16`		`91`
`17`		`99`
`18`		`105`
`19`		`112`
`20`		`117`
`21`		`120`
`22`		`132`
`23`		`140`
`24`		`143`
`25`		`144`
`26`		`153`
`27`		`156`
`28`		`165`
`29`		`168`
`30`		`171`
`31`		`176`
`32`		`180`
`33`		`187`
`34`		`195`
`35`		`208`
`36`		`209`
`37`		`220`
`38`		`221`
`39`		`224`
`40`		`231`
`41`		`240`
`42`		`247`
`43`		`252`
`44`		`253`
`45`		`255`
`46`		`260`
`47`		`264`
`48`		`272`
`49`		`273`
`50`		`275`
`51`		`285`
`52`		`288`
`53`		`299`
`54`		`304`
`55`		`308`
`56`		`312`
`57`		`323`

[4,12,15,21,24,35,40,45,55,56,60,63,72,77,80,84, 91,99,105,112,117,120,132,140,143,144,153,156,165, 168,171,176,180,187,195,208,209,220,221,224,231, 240,247,252,253,255,260,264,272,273,275,285,288, 299,304,308,312,323]

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research