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A136072
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Father primes of order 3.
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10
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41, 83, 97, 139, 167, 223, 293, 307, 419, 433, 503, 587, 727, 769, 797, 1049, 1063, 1217, 1259, 1399, 1483, 1567, 1609, 1637, 1693, 1847, 1889, 1973, 1987, 2477, 2617, 2659, 2687, 2729, 2939, 2953, 3023, 3037, 3079, 3359, 3499, 3527, 3793, 3947, 3989
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OFFSET
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1,1
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COMMENTS
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LINKS
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MAPLE
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select(t -> isprime(t) and isprime((t-6)/7), [seq(i, i=13..10000, 14)]); # Robert Israel, Nov 30 2015
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MATHEMATICA
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n = 3; a = {}; Do[If[PrimeQ[(Prime[k] - 2n)/(2n + 1)], AppendTo[a, Prime[k]]], {k, 1, 1500}]; a
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CROSSREFS
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For smallest father primes of order n see A136026 (also definition). For father primes of order 1 see A094524. For father primes of order 2 see A136071.
Cf. A023208, A094524, A136019, A136020, A136026, A136027, A136071, A136073, A136074, A136075, A136076, A136077, A136078, A136079, A136080.
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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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