cp's OEIS Frontend

A373484 Numbers k such that A083345(k) and A276085(k) are both multiples of 3, where A276085 is fully additive with a(p) = p#/p, and A083345 is the numerator of the fully additive function with a(p) = 1/p.

%I A373484 #7 Jun 09 2024 14:04:56
%S A373484 1,8,35,64,65,77,95,119,125,135,143,155,161,185,203,209,215,221,275,
%T A373484 280,287,297,299,305,323,329,335,341,343,365,371,377,395,407,413,425,
%U A373484 437,459,473,485,497,512,515,520,527,533,545,551,575,581,605,611,616,621,623,629,635,637,671,689,695,707,713,725,731,737
%N A373484 Numbers k such that A083345(k) and A276085(k) are both multiples of 3, where A276085 is fully additive with a(p) = p#/p, and A083345 is the numerator of the fully additive function with a(p) = 1/p.
%C A373484 A multiplicative semigroup: if m and n are in the sequence, then so is m*n.
%H A373484 Antti Karttunen, <a href="/A373484/b373484.txt">Table of n, a(n) for n = 1..20000</a>
%o A373484 (PARI) isA373484 = A373483;
%Y A373484 Intersection of A339746 and A369644.
%Y A373484 Subsequence of A373144.
%Y A373484 Positions of multiples of 3 in A373485.
%Y A373484 Cf. A083345, A276085, A373483 (characteristic function).
%K A373484 nonn
%O A373484 1,2
%A A373484 _Antti Karttunen_, Jun 09 2024