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A098911
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Table(n,2) read by rows giving k and j such that Mersenne-prime(k) - Mersenne-prime(j) - 1 is prime.
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0
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2, 1, 3, 2, 6, 2, 9, 6, 9, 7, 10, 9
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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EXAMPLE
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(2^3-1)-(2^2-1)-1 = 5 = Mersenne-prime(2)-Mersenne-prime(1)-1 k=2 j=1 for n=1
(2^5-1)-(2^3-1)-1 = 23 = Mersenne-prime(3)-Mersenne-prime(2)-1 k=3 j=2 for n=2
(2^17-1)-(2^3-1)-1 = 131063 = Mersenne-prime(6)-Mersenne-prime(2)-1 k=6 j=2 for n=3
and 3,23,131063 are primes
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CROSSREFS
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KEYWORD
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more,nonn,tabf
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AUTHOR
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STATUS
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approved
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