A075734 Fibonacci numbers F(k) when k is a product of an even number of distinct primes A030229 (mu(k)=1).

1, 8, 55, 377, 610, 10946, 17711, 121393, 3524578, 5702887, 9227465, 39088169, 63245986, 1836311903, 20365011074, 139583862445, 365435296162, 591286729879, 4052739537881, 17167680177565, 117669030460994

Offset

1,2

Links

Table of n, a(n) for n=1..21.

Example

14=2*7 and fibonacci(14)=377, 15=3*5 and fibonacci(15)=610,...

Maple

with(combinat, fibonacci): fib_m1dsk := proc(n); if (numtheory[mobius](n)=1) then RETURN(fibonacci(n)); fi; end: seq((fib_m1dsk((i))), i=1..100);

Crossrefs

Cf. A000045, A030229.

Sequence in context: A013698 A154245 A143420 * A033890 A010924 A308687

Adjacent sequences: A075731 A075732 A075733 * A075735 A075736 A075737

Keyword

easy,nonn

Author

Jani Melik, Oct 07 2002

Status

approved