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Indices of primes in A001835.
0

%I #14 Dec 05 2023 16:43:19

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

%N Indices of primes in A001835.

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

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

%H J. B. Cosgrave and K. Dilcher, <a href="https://fq.math.ca/Papers1/51-2/CosgraveDilcher-1.pdf">Pairs of reciprocal quadratic congruences involving primes</a>, Fib. Quart. 51 (2) (2013) 98, after Theorem 3.

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

%Y Cf. A001835, A096147.

%K nonn,more

%O 1,1

%A _R. J. Mathar_, Jul 22 2022