Least k such that k*Mersenne-prime(n)*Mersenne-prime(n+1) - 1 is prime.

Terms

a(0) =2a(1) =2a(2) =2a(3) =24a(4) =2a(5) =50a(6) =6a(7) =26a(8) =14a(9) =306a(10) =86a(11) =846a(12) =104a(13) =1832a(14) =272a(15) =2222a(16) =2540a(17) =884a(18) =5474a(19) =1950a(20) =28358a(21) =13338a(22) =76740