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A052168
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Primes at which difference pattern X4242Y (X and Y >= 6) occurs in A001223.
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16
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1867, 3457, 5647, 15727, 79687, 88807, 101107, 257857, 266677, 276037, 284737, 340927, 354247, 375247, 402757, 419047, 427237, 463447, 470077, 626617, 666427, 736357, 823717, 855727, 959467, 978067, 1022377, 1043587, 1068247, 1118857
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OFFSET
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1,1
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COMMENTS
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All terms are == 7 (mod 30). - Zak Seidov, May 07 2017
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LINKS
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EXAMPLE
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1867 is here because the successor primes (1867),1871,1873,1877,1879 give 4242 difference pattern. The primes around this island are 1861 and 1889 in distance 6 and 10 resp. Thus the d-pattern "around 1867" is {6,4,2,4,2,10}. [corrected by Zak Seidov, May 07 2017]
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MATHEMATICA
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m=1867; Reap[Do[While[ PrimeQ[m] m = m + 30]; If[
m > NextPrime[m, -1] + 5 && AllTrue[m + {4, 6, 10, 12}, PrimeQ] && NextPrime[m + 12] > m + 17, Sow[m]]; m = m + 30, {10^5}]][[2, 1]] (* Zak Seidov, May 07 2017 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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