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Fibonacci numbers F(k) as k runs through the products of an odd number of distinct primes A030059 (mu(k)=-1).
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%I #5 Sep 22 2020 06:08:59

%S 1,2,5,13,89,233,1597,4181,28657,514229,832040,1346269,24157817,

%T 165580141,267914296,433494437,2971215073,53316291173,956722026041,

%U 2504730781961,27777890035288,44945570212853,190392490709135

%N Fibonacci numbers F(k) as k runs through the products of an odd number of distinct primes A030059 (mu(k)=-1).

%F a(n) = A000045(A030059(n)).

%e 30=2*3*5 and fibonacci(30)=832040, 31 is prime and fibonacci(31)=1346269,...

%p A075736 := proc(n)

%p combinat[fibonacci](A030059(n)) ;

%p end proc:

%p seq(A075736(n),n=1..40) ; # _R. J. Mathar_, Sep 22 2020

%Y Cf. A000045, A030059, A074691.

%K easy,nonn

%O 1,2

%A _Jani Melik_, Oct 07 2002