Composite numbers k such that 2^(k-1) == - lambda(k) (mod k), where lambda is the Carmichael lambda function (A002322).

A330446

Composite numbers k such that 2^(k-1) == - lambda(k) (mod k), where lambda is the Carmichael lambda function (A002322).

Terms

    a(0) =140a(1) =1054a(2) =1068a(3) =4844a(4) =11209a(5) =19856a(6) =24949a(7) =28390a(8) =78184a(9) =423796a(10) =769516a(11) =4283544a(12) =5935168a(13) =13116053a(14) =122189752a(15) =441252296a(16) =528500308a(17) =636697392a(18) =669629030a(19) =669778082a(20) =1228748591

External references