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 A098911 Table(n,2) read by rows giving k and j such that Mersenne-prime(k) - Mersenne-prime(j) - 1 is prime. 0

%I #6 Mar 07 2013 07:34:35

%S 2,1,3,2,6,2,9,6,9,7,10,9

%N Table(n,2) read by rows giving k and j such that Mersenne-prime(k) - Mersenne-prime(j) - 1 is prime.

%e (2^3-1)-(2^2-1)-1 = 5 = Mersenne-prime(2)-Mersenne-prime(1)-1 k=2 j=1 for n=1

%e (2^5-1)-(2^3-1)-1 = 23 = Mersenne-prime(3)-Mersenne-prime(2)-1 k=3 j=2 for n=2

%e (2^17-1)-(2^3-1)-1 = 131063 = Mersenne-prime(6)-Mersenne-prime(2)-1 k=6 j=2 for n=3

%e and 3,23,131063 are primes

%K more,nonn,tabf

%O 1,1

%A _Pierre CAMI_, Oct 16 2004

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Last modified June 1 11:52 EDT 2023. Contains 363068 sequences. (Running on oeis4.)