A181691 Numbers n with property that Fibonacci(n) has exactly two 1's.

19, 26, 27, 37, 40, 47, 51, 56, 61, 64, 68, 69, 70, 72, 79, 84, 86, 87, 92, 97, 98, 99, 102, 108, 113, 121, 135, 138, 140, 144, 153, 154, 162, 164, 167, 178, 183, 185, 191, 228, 235, 250, 251, 252, 257, 269, 292, 306

Offset

1,1

Comments

No more terms <10,000. Is the sequence finite?

No more terms <100,000. [From Harvey P. Dale, Apr 02 2012]

Links

Table of n, a(n) for n=1..48.

Mathematica

Select[Range[310], DigitCount[Fibonacci[#], 10, 1]==2&] (* Harvey P. Dale, Apr 02 2012 *)

Crossrefs

Cf. A085855 Number of 1's in decimal expansion of Fibonacci(n).

Sequence in context: A276437 A129071 A066125 * A039342 A043165 A043945

Adjacent sequences: A181688 A181689 A181690 * A181692 A181693 A181694

Keyword

base,nonn

Author

Zak Seidov, Nov 05 2010

Status

approved