A355979 Indices of primes in A001835.

2, 3, 4, 6, 7, 10, 12, 19, 22, 75, 114

Offset: 1

Author

R. J. Mathar, Jul 22 2022

Keywords

• nonn
• more

Comments

Related to the search of solutions of the pair of congruences p^2 == -2 (mod q), q^2 == -2 (mod p).

Cosgrave and Dilcher list terms up to 25000, including probable primes (and have a typo 23 for 22).

Links

• J. B. Cosgrave and K. Dilcher, Pairs of reciprocal quadratic congruences involving primes, Fib. Quart. 51 (2) (2013) 98, after Theorem 3.

Crossrefs

Cf. A001835, A096147.

Formula

A096147(n) = A001835(a(n)).