

A046120


Largest member of a sexy prime triple; value of p+12 where (p,p+6,p+12) are all prime but p+18 is not


4



19, 29, 43, 59, 79, 109, 113, 163, 179, 239, 269, 283, 359, 379, 569, 599, 619, 659, 739, 953, 983, 1109, 1129, 1193, 1229, 1289, 1303, 1373, 1439, 1459, 1499, 1619, 1669, 1759, 1789, 1879, 1913, 1999, 2143, 2293, 2389, 2423, 2689, 2699, 2719
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OFFSET

1,1


COMMENTS

If a sexy prime triple happens to include the last 3 members of a sexy prime quadruple this sequence will contain the sexy prime triple's largest member, e.g. a(4)=59 is the largest member of the sexy prime triple (47, 53, 59), but is the fourth member of the sexy prime quadruple (41, 47, 53, 59). [From Daniel Forgues, Aug 05 2009]


LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000
Eric Weisstein's World of Mathematics, Sexy Primes.


MATHEMATICA

lst={}; Do[p=Prime[n]; If[PrimeQ[p+6]&&PrimeQ[p+12]&&!PrimeQ[p+18], AppendTo[lst, p+12]], {n, 7!}]; lst [From Vladimir Joseph Stephan Orlovsky, Aug 29 2008]
#+12&/@Select[Prime[Range[400]], PrimeQ[#+{6, 12, 18}]=={True, True, False}&] (* Harvey P. Dale, Dec 08 2012 *)


CROSSREFS

Cf. A023201, A046117.
Cf. A046118, A046119.
Sequence in context: A173966 A096218 A100590 * A063644 A156782 A092600
Adjacent sequences: A046117 A046118 A046119 * A046121 A046122 A046123


KEYWORD

nonn


AUTHOR

Eric W. Weisstein


STATUS

approved



