A371508 Integers k such that A000045(k) + A004091(k) is prime (A000040).

1, 2, 81, 311, 6887, 9691, 296959

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Example

1 is a term since Fibonacci(1) = 1 plus its reversal is 1 + 1 = 2 which is prime (and for the same reason 2 is a term).
81 is a term since Fibonacci(81) = 37889062373143906 plus its reversal is 98823199699242779 which is prime.

Mathematica

Select[Range[10^4], PrimeQ[(f = Fibonacci[#]) + IntegerReverse[f]] &] (* Amiram Eldar, Mar 25 2024 *)

Crossrefs

Cf. A000040, A000045, A004091, A072366.

Sequence in context: A051391 A041799 A187858 * A352742 A072408 A318587

Adjacent sequences: A371505 A371506 A371507 * A371509 A371510 A371511

Keyword

nonn,base,more

Author

Gonzalo Martínez, Mar 25 2024

Extensions

a(7) from Michael S. Branicky, Jan 07 2025

Status

approved