Semiprimes pq such that pq - 1 divides p^2 + q^2 + 2.

A164698

Semiprimes pq such that pq - 1 divides p^2 + q^2 + 2.

Terms

    a(0) =6a(1) =21a(2) =26a(3) =51a(4) =1157a(5) =372101

External references