A036972 Numbers k such that the k-th prime is a Fibonacci number reversed.

1, 2, 3, 11, 14, 137, 1005, 5324, 6486, 33326, 1847020051726, 19899051754834984670

Offset: 1

Author

N. J. A. Sloane, G. L. Honaker, Jr.

Keywords

• nonn
• more
• base

Comments

More terms could be obtained from A036971.

The next reversed Fibonacci number which is a prime number is 940647607443258103531. The next term in the sequence would be the prime index for that prime. - Harvey P. Dale, Jun 02 2009

Links

• Kim Walisch, Fast C++ prime counting function implementation (primecount).

Crossrefs

Cf. A036797, A036971.

Programs

Mathematica

Sort[PrimePi/@(Select[FromDigits[Reverse[IntegerDigits[ # ]]]&/@Fibonacci[Range[90]],PrimeQ])] (* Harvey P. Dale, Jun 02 2009 *)

Extensions

One additional term from Harvey P. Dale, Jun 02 2009

Offset corrected and a(12) added using Kim Walisch's primecount by Amiram Eldar, May 06 2024