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

Author

Vladimir Joseph Stephan Orlovsky, Nov 17 2009

Keywords

• nonn

Links

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

Crossrefs

Cf. A000045, A023172, A167745.

Programs

Mathematica

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

Formula

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