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%I #11 Jun 03 2024 15:40:18
%S 1,4,8,9,15,16,21,25,32,33,35,36,39,49,51,55,57,60,64,65,69,72,77,81,
%T 84,85,87,91,93,95,100,111,115,119,120,121,123,128,129,132,133,135,
%U 140,141,143,144,145,155,156,159,161,168,169,177,183,185,187,189,196,200,201,203,204,205,209,213,215,217,219,220,221
%N Numbers whose sum of prime factors (with repetition, A001414) and arithmetic derivative (A003415) are both even.
%C Numbers k such that sopfr(k) and k' are both even.
%C A multiplicative semigroup; if m and n are in the sequence then so is m*n.
%H Antti Karttunen, <a href="/A373375/b373375.txt">Table of n, a(n) for n = 1..10000</a>
%o (PARI) isA373375 = A373374;
%Y Intersection of A036349 and A235992.
%Y Disjoint union of A345452 and 8*A345452.
%Y Positions of even terms in A373364.
%Y Cf. A001414, A003415, A373374 (characteristic function), A373376 (complement).
%K nonn
%O 1,2
%A _Antti Karttunen_, Jun 03 2024