Smallest prime p such that M(n)^2+p*M(n)+1 is prime with M(n)= Mersenne primes =A000668(n).

A139431

Smallest prime p such that M(n)^2+p*M(n)+1 is prime with M(n)= Mersenne primes =A000668(n).

Terms

    a(0) =3a(1) =3a(2) =5a(3) =17a(4) =17a(5) =5a(6) =83a(7) =503a(8) =71a(9) =101a(10) =947a(11) =59a(12) =569a(13) =1787a(14) =353a(15) =17093a(16) =2801a(17) =3359a(18) =25097a(19) =9323a(20) =491837a(21) =97367a(22) =209567a(23) =21221a(24) =273857a(25) =462947a(26) =216719

External references