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A031931
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Upper prime of a difference of 12 between consecutive primes.
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4
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211, 223, 479, 521, 631, 673, 809, 1009, 1213, 1249, 1319, 1471, 1511, 1523, 1543, 1721, 1801, 1823, 1901, 2081, 2111, 2309, 2411, 2459, 2591, 2633, 2789, 2939, 3061, 3079, 3181, 3203, 3271, 3343, 3359, 3511, 3571, 3671, 3943, 4001, 4091, 4111, 4409, 4421
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Harvey P. Dale, Table of n, a(n) for n = 1..1000
Index entries for primes, gaps between
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MATHEMATICA
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Select[Partition[Prime[Range[700]], 2, 1], #[[2]]-#[[1]]==12&][[All, 2]] (* Harvey P. Dale, Dec 28 2018 *)
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PROG
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(PARI) isok(p) = isprime(p) && (p-precprime(p-1) == 12); \\ Michel Marcus, Jun 24 2022
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CROSSREFS
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Cf. A031925 (difference of 6).
Sequence in context: A319141 A133959 A133960 * A246136 A087833 A240918
Adjacent sequences: A031928 A031929 A031930 * A031932 A031933 A031934
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KEYWORD
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nonn
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AUTHOR
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Jeff Burch
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EXTENSIONS
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Corrected and extended by Harvey P. Dale, Dec 28 2018
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STATUS
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approved
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