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A069109 Primes of the form F(k)-k where F(k) is the k-th Fibonacci number. 2
2, 13, 971, 121367, 317783, 3416454622906631, 3807901929474025356630904133903, 757791618667731139247631372099907 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(9) is a 169-digit certified prime (Primo). - Rick L. Shepherd, Apr 26 2002
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..13
FORMULA
A065220 INTERSECT A000040. - R. J. Mathar, Apr 24 2017
a(n) = A065220(A270821(n)). - Amiram Eldar, Jun 04 2022
MATHEMATICA
Select[Table[Fibonacci[k] - k, {k, 1, 160}], PrimeQ] (* Amiram Eldar, Jun 04 2022 *)
PROG
(PARI) for(n=1, 4036, if(ispseudoprime(t=fibonacci(n)-n), print1(t", "))); \\ Charles R Greathouse IV, Feb 17 2011
CROSSREFS
Cf. A000045, A065220, A270821.
Sequence in context: A109947 A175513 A064185 * A004071 A174363 A158026
Adjacent sequences: A069106 A069107 A069108 * A069110 A069111 A069112
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Apr 06 2002
STATUS
approved

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Last modified August 30 13:06 EDT 2024. Contains 375543 sequences. (Running on oeis4.)