A136145 First of eight consecutive primes that are four sets of twin primes.

9419, 62969, 72221, 392261, 495569, 663569, 909287, 909299, 1006301, 1138367, 1159187, 1173539, 1322147, 2144477, 2168651, 2502341, 2596619, 2596637, 2668217, 3020999, 3215711, 3664679, 4890857, 5248079, 5261699, 5532269

Offset

1,1

Comments

Could be called unrestricted prime octets.

Links

Harvey P. Dale, Table of n, a(n) for n = 1..200

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]; p6=Prime[n+6]; p7=Prime[n+7]; If[p1-p0==p3-p2==p5-p4==p7-p6==2, AppendTo[lst, p0]], {n, 3*9!}]; lst (* Vladimir Joseph Stephan Orlovsky, Apr 02 2010 *)
Transpose[Select[Partition[Prime[Range[400000]], 8, 1], Union[ Differences/@ Partition[ #, 2]]=={{2}}&]][[1]] (* Harvey P. Dale, Nov 13 2015 *)

Crossrefs

Sequence in context: A235677 A235447 A068220 * A035792 A252704 A202099

Adjacent sequences: A136142 A136143 A136144 * A136146 A136147 A136148

Keyword

nonn

Author

Harry J. Smith, Dec 16 2007

Status

approved