A003981 - OEIS

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A003981 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`4`
`4`		`7`
`5`		`6`
`6`		`12`
`7`		`9`
`8`		`15`
`9`		`13`
`10`		`18`
`11`		`14`
`12`		`28`
`13`		`22`
`14`		`27`
`15`		`24`
`16`		`31`
`17`		`35`
`18`		`39`
`19`		`56`
`20`		`42`
`21`		`36`
`22`		`42`
`23`		`90`
`24`		`60`
`25`		`31`
`26`		`66`
`27`		`40`
`28`		`63`
`29`		`145`
`30`		`72`
`31`		`234`
`32`		`63`
`33`		`56`
`34`		`105`
`35`		`54`
`36`		`91`
`37`		`378`
`38`		`168`
`39`		`88`
`40`		`90`
`41`		`611`
`42`		`108`
`43`		`988`
`44`		`98`
`45`		`78`
`46`		`270`
`47`		`1598`
`48`		`124`
`49`		`73`
`50`		`93`
`51`		`140`
`52`		`154`
`53`		`2585`
`54`		`120`
`55`		`84`
`56`		`135`
`57`		`224`
`58`		`435`
`59`		`4182`
`60`		`168`
`61`		`6766`
`62`		`702`

[1,3,4,7,6,12,9,15,13,18,14,28,22,27,24,31,35,39, 56,42,36,42,90,60,31,66,40,63,145,72,234,63,56, 105,54,91,378,168,88,90,611,108,988,98,78,270, 1598,124,73,93,140,154,2585,120,84,135,224,435, 4182,168,6766,702]

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Last modified June 6 16:04 EDT 2024. Contains 373133 sequences. (Running on oeis4.)