A061800 as tables, graphs or sounds

A061800 formatted as a simple table:

`n`		`a(n)`
`0`		`1`
`1`		`0`
`2`		`3`
`3`		`4`
`4`		`3`
`5`		`6`
`6`		`7`
`7`		`6`
`8`		`9`
`9`		`10`
`10`		`9`
`11`		`12`
`12`		`13`
`13`		`12`
`14`		`15`
`15`		`16`
`16`		`15`
`17`		`18`
`18`		`19`
`19`		`18`
`20`		`21`
`21`		`22`
`22`		`21`
`23`		`24`
`24`		`25`
`25`		`24`
`26`		`27`
`27`		`28`
`28`		`27`
`29`		`30`
`30`		`31`
`31`		`30`
`32`		`33`
`33`		`34`
`34`		`33`
`35`		`36`
`36`		`37`
`37`		`36`
`38`		`39`
`39`		`40`
`40`		`39`
`41`		`42`
`42`		`43`
`43`		`42`
`44`		`45`
`45`		`46`
`46`		`45`
`47`		`48`
`48`		`49`
`49`		`48`
`50`		`51`
`51`		`52`
`52`		`51`
`53`		`54`
`54`		`55`
`55`		`54`
`56`		`57`
`57`		`58`
`58`		`57`
`59`		`60`
`60`		`61`
`61`		`60`
`62`		`63`
`63`		`64`
`64`		`63`
`65`		`66`
`66`		`67`
`67`		`66`
`68`		`69`
`69`		`70`
`70`		`69`
`71`		`72`

[1,0,3,4,3,6,7,6,9,10,9,12,13,12,15,16,15,18,19, 18,21,22,21,24,25,24,27,28,27,30,31,30,33,34,33, 36,37,36,39,40,39,42,43,42,45,46,45,48,49,48,51, 52,51,54,55,54,57,58,57,60,61,60,63,64,63,66,67, 66,69,70,69,72]

Last modified December 4 23:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research