Least k such that (k*M(n))^2+k*M(n)-1 is the first of a pair of twin primes, where M(n) = Mersenne primes.

A109342

Least k such that (k*M(n))^2+k*M(n)-1 is the first of a pair of twin primes, where M(n) = Mersenne primes.

Terms

    a(0) =1a(1) =3a(2) =5a(3) =8a(4) =89a(5) =275a(6) =278a(7) =404a(8) =96a(9) =1538a(10) =1253a(11) =15858a(12) =189168a(13) =119552a(14) =636315a(15) =1047122a(16) =3571449

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