Least k such that k*M#(n) - 1 is prime where M#(n) is the product of the first n Mersenne primes.
A098919
Least k such that k*M#(n) - 1 is prime where M#(n) is the product of the first n Mersenne primes.
Terms
- a(0) =2a(1) =2a(2) =2a(3) =16a(4) =2a(5) =24a(6) =8a(7) =66a(8) =6a(9) =38a(10) =44a(11) =142a(12) =116a(13) =20a(14) =460a(15) =2974a(16) =5774a(17) =1110a(18) =2520a(19) =3422
External references
- oeis: A098919