A136143 First of six consecutive primes that are three sets of twin primes.

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

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