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A103874
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Numbers k such that 2*P(k) + 3, 2*P(k+1) + 5, 2*P(k+2) + 7, 2*P(k+3) + 11 are also consecutive primes where P(i) = i-th prime.
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2
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110984, 134934, 147387, 190915, 349609, 412066, 432771, 682320, 782530, 927635, 999610, 1006286, 1010214, 1098286, 1199214, 1487104, 2275690, 3410484, 4133263, 4165508, 4783102, 4785240, 4977350, 5037012, 6047689, 6151406, 6427787, 6744378, 7047508, 8315079, 8579401
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OFFSET
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1,1
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LINKS
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PROG
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(PARI) lista(nn) = {my(k=1, v=[2, 3, 5, 7]); forprime(p=11, nn, k++; v=concat(v[2..4], p); if(ispseudoprime(2*v[1]+3) && nextprime(2*v[1]+4)==2*v[2]+5 && nextprime(2*v[2]+6)==2*v[3]+7 && nextprime(2*v[3]+8)==2*v[4]+11, print1(k, ", "))); } \\ Jinyuan Wang, Mar 05 2020
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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