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 A136143 First of six consecutive primes that are three sets of twin primes. 1
 5, 179, 809, 3359, 4217, 6761, 9419, 9431, 18041, 21587, 26861, 49367, 62969, 62981, 67187, 72221, 72227, 80447, 82721, 91127, 97841, 98897, 103967, 109829, 122597, 154157, 178037, 203321, 208931, 225749, 227609, 236867, 243671, 251201 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Could be called unrestricted prime sextets. LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA lst={}; Do[p0=Prime[n]; p1=Prime[n+1]; p2=Prime[n+2]; p3=Prime[n+3]; p4=Prime[n+4]; p5=Prime[n+5]; If[p1-p0==2&&p3-p2==2&&p5-p4==2, AppendTo[lst, p0]], {n, 8!}]; lst (* Vladimir Joseph Stephan Orlovsky, Apr 02 2010 *) Transpose[Select[Partition[Prime[Range[25000]], 6, 1], #[[2]]-#[[1]] == #[[4]]-#[[3]] == #[[6]]-#[[5]]==2&]][[1]] (* Harvey P. Dale, Apr 20 2014 *) CROSSREFS Cf. A090953. - R. J. Mathar, Oct 28 2008 Sequence in context: A194571 A210931 A141981 * A035791 A324090 A250327 Adjacent sequences: A136140 A136141 A136142 * A136144 A136145 A136146 KEYWORD nonn AUTHOR Harry J. Smith, Dec 16 2007 STATUS approved

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Last modified September 7 13:22 EDT 2024. Contains 375730 sequences. (Running on oeis4.)