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The 3-adic valuation of A113177(n), where A113177 is fully additive with a(p) = Fibonacci(p).
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%I #8 Jul 01 2024 15:27:08

%S 0,0,0,0,1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,1,2,0,0,0,2,1,1,0,0,0,0,0,0,2,

%T 1,0,1,0,0,0,0,0,0,2,0,0,1,0,0,1,0,0,0,0,0,0,1,0,2,0,0,0,1,0,0,0,1,1,

%U 0,0,0,0,3,1,0,1,0,0,2,0,0,0,0,2,1,0,0,0,0,1,1,1,0,0,0,0,3,1,1,0,0,0,0,0,1,0,0

%N The 3-adic valuation of A113177(n), where A113177 is fully additive with a(p) = Fibonacci(p).

%H Antti Karttunen, <a href="/A374207/b374207.txt">Table of n, a(n) for n = 2..100000</a>

%F a(n) = A007949(A113177(n)).

%o (PARI)

%o A113177(n) = if(n<=1, 0, my(f=factor(n)); sum(i=1, #f~, f[i, 2]*fibonacci(f[i,1])));

%o A374207(n) = valuation(A113177(n), 3);

%Y Cf. A007949, A113177, A374051, A374052 (indices of nonzero terms).

%Y Cf. also A374133, A374213, A374203, A374206, A374208.

%K nonn

%O 2,21

%A _Antti Karttunen_, Jul 01 2024