cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A384227 Smaller members p of sexy prime pairs (p,p+6) such that both p and p+6 are emirps.

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%I A384227 #76 Aug 31 2025 21:44:12
%S A384227 31,73,107,733,1091,1097,1103,1217,1223,1231,3083,3163,3251,3463,3911,
%T A384227 7187,7523,7643,7681,9127,9221,9491,9781,10061,10247,10453,10853,
%U A384227 10987,11587,11777,11783,11833,11897,11903,11927,11933,11953,12107,12113,12547,12757
%N A384227 Smaller members p of sexy prime pairs (p,p+6) such that both p and p+6 are emirps.
%t A384227 emirpQ[n_] := emirpQ[n] = n != IntegerReverse[n] && PrimeQ[n] && PrimeQ[IntegerReverse[n]]; Select[Range[13000], emirpQ[#] && emirpQ[# + 6] &] (* _Amiram Eldar_, Aug 26 2025 *)
%Y A384227 Cf. A006567, A023201.
%K A384227 nonn,base,new
%O A384227 1,1
%A A384227 _Emanuele Pace_, Aug 26 2025