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A054821 Third term of weak prime quartet: p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m). 0

%I #7 Nov 21 2013 12:47:23

%S 23,47,89,113,233,293,317,353,359,389,409,449,467,509,577,647,683,691,

%T 839,863,887,919,1039,1069,1097,1201,1237,1283,1307,1327,1381,1433,

%U 1439,1459,1493,1499,1559,1613,1627,1637,1709,1889,2003,2039,2099,2179

%N Third term of weak prime quartet: p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m).

%t wpqQ[listn_]:=Module[{d=Differences[listn]},d[[1]]<d[[2]]&& d[[2]]<d[[3]]]; Transpose[Select[Partition[Prime[Range[500]],4,1], wpqQ]] [[3]] (* _Harvey P. Dale_, Apr 11 2011 *)

%Y Cf. A051635, A054800-A054840.

%K nonn

%O 1,1

%A _Henry Bottomley_, Apr 10 2000

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)