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A074451 Non-cubefree noncubes. 0

%I #10 Oct 16 2015 10:15:56

%S 16,24,32,40,48,54,56,72,80,81,88,96,104,108,112,120,128,135,136,144,

%T 152,160,162,168,176,184,189,192,200,208,224,232,240,243,248,250,256,

%U 264,270,272,280,288,296,297,304,312,320,324,328,336,344,351,352,360

%N Non-cubefree noncubes.

%F For n > 35, a(n) < 7n. Asymptotically, a(n) ~ kn with k = 1/A085541 = 5.722.... - _Charles R Greathouse IV_, Oct 16 2015

%o (PARI) is(n)=my(f=factor(n)[,2]); f%3 && vecmax(f)>2 \\ _Charles R Greathouse IV_, Oct 16 2015

%Y Intersection of A046099 and A007412.

%Y Cf. A051144, A085541.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Sep 25 2002

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Last modified May 1 13:51 EDT 2024. Contains 372174 sequences. (Running on oeis4.)