A143387 Least prime a(n) such that M(n)*(M(n)+a(n))-1 and M(n)*(M(n)+a(n))+1 are twin primes with M(i)=i-th Mersenne prime A000043(i).
3, 53, 11, 17, 317, 89, 1259, 2543, 7517, 16217, 15107, 33119, 60611, 671063, 2648057
Offset: 1
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