A376850 Numbers k such that 85^k - 2 is prime.

1, 4, 10, 29, 44, 381, 565, 5478, 6423, 15484, 32773

Offset

1,2

Comments

Dedicated to N. J. A. Sloane for his 85th birthday!

Links

Table of n, a(n) for n=1..11.

Prog

(Python)
from sympy import isprime
def ok(n): return isprime(85**n - 2)
print([k for k in range(600) if ok(k)])

Crossrefs

Cf. A248546, A376910.

Sequence in context: A008995 A111236 A164361 * A006907 A305204 A327590

Adjacent sequences: A376847 A376848 A376849 * A376851 A376852 A376853

Keyword

nonn,more

Author

Michael S. Branicky, Oct 10 2024

Status

approved