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A216287
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Decades whose prime pattern repeat in the next decade.
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2
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37, 78, 113, 124, 133, 134, 139, 154, 167, 180, 218, 234, 248, 276, 288, 291, 310, 314, 323, 331, 347, 374, 418, 430, 436, 444, 476, 484, 499, 512, 524, 532, 536, 545, 558, 560, 575, 596, 609, 616, 624, 640, 648, 650, 674, 692, 696, 706, 708, 713, 717, 726
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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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MATHEMATICA
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ps0 = {2, 3, 5, 7}; t = {}; Do[ps1 = Select[Range[10 n, 10 n + 9], PrimeQ]; If[Length[ps0] == Length[ps1] && ps0 + 10 == ps1, AppendTo[t, n - 1]]; ps0 = ps1, {n, 2, 1000}]; t (* T. D. Noe, Sep 03 2012 *)
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PROG
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(PARI) for(i=2, 1000, if(isprime(10*i+1)==isprime(10*i+11)&&isprime(10*i+3)==isprime(10*i+13)&&isprime(10*i+7)==isprime(10*i+17)&&isprime(10*i+9)==isprime(10*i+19), print1(i", "))) /* V. Raman, Dec 08 2012 */
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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