A168041 Fibonacci numbers that are divisible by their index.

1, 5, 144, 46368, 75025, 14930352, 4807526976, 1548008755920, 498454011879264, 51680708854858323072, 16641027750620563662096, 5358359254990966640871840, 59425114757512643212875125, 555565404224292694404015791808

Offset

1,2

Links

G. C. Greubel, Table of n, a(n) for n = 1..100

Formula

a(n) = A000045(A023172(n)).

Mathematica

f[n_]:=Fibonacci[n]/n; lst={}; Do[If[IntegerQ[f[n]], AppendTo[lst, Fibonacci[n]]], {n, 4*5!}]; lst

Crossrefs

Cf. A000045, A023172, A167745.

Sequence in context: A134503 A282836 A320414 * A081322 A232986 A322954

Adjacent sequences: A168038 A168039 A168040 * A168042 A168043 A168044

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Nov 17 2009

Status

approved