A075736 Fibonacci numbers F(k) as k runs through the products of an odd number of distinct primes A030059 (mu(k)=-1).

1, 2, 5, 13, 89, 233, 1597, 4181, 28657, 514229, 832040, 1346269, 24157817, 165580141, 267914296, 433494437, 2971215073, 53316291173, 956722026041, 2504730781961, 27777890035288, 44945570212853, 190392490709135

Offset

1,2

Links

Table of n, a(n) for n=1..23.

Formula

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

Example

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

Maple

A075736 := proc(n)
    combinat[fibonacci](A030059(n)) ;
end proc:
seq(A075736(n), n=1..40) ; # R. J. Mathar, Sep 22 2020

Crossrefs

Cf. A000045, A030059, A074691.

Sequence in context: A032015 A325626 A325627 * A030426 A075742 A075737

Adjacent sequences: A075733 A075734 A075735 * A075737 A075738 A075739

Keyword

easy,nonn

Author

Jani Melik, Oct 07 2002

Status

approved