A009947 - OEIS

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A009947 as a simple table

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

[0,0,1,2,1,3,4,2,5,6,3,7,8,4,9,10,5,11,12,6,13,14, 7,15,16,8,17,18,9,19,20,10,21,22,11,23,24,12,25, 26,13,27,28,14,29,30,15,31,32,16,33,34,17,35,36, 18,37,38,19,39,40,20,41,42,21,43,44,22,45,46]

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Last modified April 23 15:20 EDT 2024. Contains 371916 sequences. (Running on oeis4.)