cp's OEIS Frontend

A374108 Numbers k such that A113177(k) and A328845(k) are both even, where A113177 is fully additive with a(p) = Fibonacci(p) and A328845 is the first Fibonacci-based variant of the arithmetic derivative.

%I A374108 #6 Jun 29 2024 09:10:00
%S A374108 1,3,4,9,12,16,25,27,35,36,40,48,49,55,56,64,65,75,77,81,85,88,91,95,
%T A374108 100,104,105,108,115,119,120,121,133,136,140,143,144,145,147,152,155,
%U A374108 160,161,165,168,169,184,185,187,192,195,196,203,205,209,215,217,220,221,224,225,231,232,235,243,247,248,253,255,256
%N A374108 Numbers k such that A113177(k) and A328845(k) are both even, where A113177 is fully additive with a(p) = Fibonacci(p) and A328845 is the first Fibonacci-based variant of the arithmetic derivative.
%C A374108 A multiplicative semigroup: if m and n are in the sequence, then so is m*n.
%H A374108 Antti Karttunen, <a href="/A374108/b374108.txt">Table of n, a(n) for n = 1..12000</a>
%o A374108 (PARI) isA374108 = A374107;
%Y A374108 Cf. A113177, A328845, A374107 (characteristic function), A374109 (complement).
%Y A374108 Indices of even terms in A374106.
%Y A374108 Intersection of A373586 and A374046.
%K A374108 nonn
%O A374108 1,2
%A A374108 _Antti Karttunen_, Jun 29 2024