Poulet numbers (Fermat pseudoprimes to base 2) k, whose sum of proper divisors sigma(k)-k is also a Poulet number.

A329461

Poulet numbers (Fermat pseudoprimes to base 2) k, whose sum of proper divisors sigma(k)-k is also a Poulet number.

Terms

    a(0) =513629a(1) =3898129a(2) =42656440661a(3) =44368051087a(4) =281257598737

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