Least k such that k*A000668(n)*A000668(n+3) + 1 is prime, where A000668(n) is the n-th Mersenne prime.

A365064

Least k such that k*A000668(n)*A000668(n+3) + 1 is prime, where A000668(n) is the n-th Mersenne prime.

Terms

    a(0) =6a(1) =10a(2) =22a(3) =30a(4) =16a(5) =12a(6) =6a(7) =238a(8) =28a(9) =58a(10) =178a(11) =324a(12) =346a(13) =214a(14) =2664a(15) =4744a(16) =24298a(17) =5236a(18) =2526a(19) =3756a(20) =6792a(21) =2778a(22) =1872a(23) =59128

External references