Numbers k such that the binary expansion of k is a prefix of the binary expansion of A003961(k), where A003961 is fully multiplicative with a(p) = nextprime(p).

A387414

Numbers k such that the binary expansion of k is a prefix of the binary expansion of A003961(k), where A003961 is fully multiplicative with a(p) = nextprime(p).

Terms

    a(0) =1a(1) =4a(2) =10a(3) =18a(4) =57a(5) =348a(6) =1054a(7) =2626a(8) =60625a(9) =68727a(10) =129260a(11) =192276a(12) =675348a(13) =960320a(14) =5368464a(15) =12371554a(16) =30078308a(17) =356311953a(18) =1158654378a(19) =1673018314

External references