cp's OEIS Frontend

A373473 Numbers k such that A001414(k) and A059975(k) are both multiples of 3, where A001414 and A059975 are fully additive with a(p) = p and a(p) = p-1, respectively.

%I A373473 #6 Jun 06 2024 14:36:23
%S A373473 1,8,20,27,42,44,50,64,68,78,92,105,110,114,116,125,160,164,170,186,
%T A373473 188,195,212,216,222,230,231,236,242,258,275,284,285,290,332,336,343,
%U A373473 352,356,357,366,374,400,402,404,410,425,428,429,438,452,465,470,474,483,506,512,524,530,540,544,548,555,575,578,582
%N A373473 Numbers k such that A001414(k) and A059975(k) are both multiples of 3, where A001414 and A059975 are fully additive with a(p) = p and a(p) = p-1, respectively.
%C A373473 A multiplicative semigroup: if m and n are in the sequence, then so is m*n.
%H A373473 Antti Karttunen, <a href="/A373473/b373473.txt">Table of n, a(n) for n = 1..10000</a>
%o A373473 (PARI) isA373473 = A373472;
%Y A373473 Intersection of A289142 and A373385.
%Y A373473 Positions of multiples of 3 in A373369.
%Y A373473 Cf. A001414, A059975.
%K A373473 nonn
%O A373473 1,2
%A A373473 _Antti Karttunen_, Jun 06 2024