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A129075
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Numbers n such that (n-4)/3 is prime.
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1
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10, 13, 19, 25, 37, 43, 55, 61, 73, 91, 97, 115, 127, 133, 145, 163, 181, 187, 205, 217, 223, 241, 253, 271, 295, 307, 313, 325, 331, 343, 385, 397, 415, 421, 451, 457, 475, 493, 505, 523, 541, 547, 577, 583, 595, 601, 637, 673, 685, 691, 703, 721, 727, 757
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = 3*prime(n) + 4. - Zak Seidov, May 12 2007
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EXAMPLE
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For n=10, (10-4)/3 = 2 which is prime so 10 is the first entry.
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MATHEMATICA
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Select[Range[7, 1000, 3], PrimeQ[(#-4)/3]&] (* Harvey P. Dale, Aug 17 2021 *)
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PROG
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(PARI) g(m) = forprime(p=2, m, n=3*p+4; print1(n", "))
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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