login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Sixth term of strong prime sextets: p(m-4)-p(m-5) > p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1).
18

%I #9 Feb 21 2014 10:25:42

%S 1873,2543,3463,9623,21493,23021,25247,26113,32191,33413,33941,39107,

%T 40823,41233,44269,47297,48823,55903,57793,67049,70123,74297,74717,

%U 74719,75167,75169,83003,84319,87881,88427,88663,103813,103919

%N Sixth term of strong prime sextets: p(m-4)-p(m-5) > p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1).

%t spsQ[lst_List]:=Module[{d=Differences[lst]},d[[1]]>d[[2]]>d[[3]]> d[[4]]> d[[5]]]; [Select[Partition[Prime[Range[10000]],6,1],spsQ]][[6]] (* _Harvey P. Dale_, Jul 04 2011 *)

%Y Cf. A051634, A054800-A054840.

%K nonn

%O 0,1

%A _Henry Bottomley_, Apr 10 2000