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A373602 Numbers k such that the sum of prime factors (with multiplicity) of A276086(k) is a multiple of 3, where A276086 is the primorial base exp-function.

%I A373602 #7 Jun 18 2024 10:01:44
%S A373602 0,2,4,13,15,17,18,20,22,31,33,35,36,38,40,49,51,53,54,56,58,67,69,71,
%T A373602 72,74,76,85,87,89,90,92,94,103,105,107,108,110,112,121,123,125,126,
%U A373602 128,130,139,141,143,144,146,148,157,159,161,162,164,166,175,177,179,180,182,184,193,195,197,198,200,202,217
%N A373602 Numbers k such that the sum of prime factors (with multiplicity) of A276086(k) is a multiple of 3, where A276086 is the primorial base exp-function.
%H A373602 Antti Karttunen, <a href="/A373602/b373602.txt">Table of n, a(n) for n = 1..20020</a>
%H A373602 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a>
%o A373602 (PARI) isA373602 = A373601;
%Y A373602 Positions of multiples of 3 in A373600.
%Y A373602 Cf. A002476, A003627, A276086, A373601 (characteristic function).
%K A373602 nonn
%O A373602 1,2
%A A373602 _Antti Karttunen_, Jun 18 2024