A011871 - OEIS

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A011871 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`0`
`3`		`0`
`4`		`0`
`5`		`1`
`6`		`1`
`7`		`2`
`8`		`3`
`9`		`4`
`10`		`5`
`11`		`6`
`12`		`7`
`13`		`8`
`14`		`10`
`15`		`11`
`16`		`13`
`17`		`15`
`18`		`17`
`19`		`19`
`20`		`21`
`21`		`23`
`22`		`25`
`23`		`28`
`24`		`30`
`25`		`33`
`26`		`36`
`27`		`39`
`28`		`42`
`29`		`45`
`30`		`48`
`31`		`51`
`32`		`55`
`33`		`58`
`34`		`62`
`35`		`66`
`36`		`70`
`37`		`74`
`38`		`78`
`39`		`82`
`40`		`86`
`41`		`91`
`42`		`95`
`43`		`100`
`44`		`105`
`45`		`110`
`46`		`115`
`47`		`120`
`48`		`125`
`49`		`130`
`50`		`136`
`51`		`141`
`52`		`147`
`53`		`153`
`54`		`159`
`55`		`165`
`56`		`171`
`57`		`177`
`58`		`183`
`59`		`190`
`60`		`196`
`61`		`203`
`62`		`210`
`63`		`217`
`64`		`224`
`65`		`231`
`66`		`238`

[0,0,0,0,0,1,1,2,3,4,5,6,7,8,10,11,13,15,17,19,21, 23,25,28,30,33,36,39,42,45,48,51,55,58,62,66,70, 74,78,82,86,91,95,100,105,110,115,120,125,130,136, 141,147,153,159,165,171,177,183,190,196,203,210, 217,224,231,238]

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Last modified April 18 20:26 EDT 2024. Contains 371781 sequences. (Running on oeis4.)