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%I #6 Oct 11 2019 11:44:12
%S 43,71,197,463,547,953,1471,1933,2647,2843,3697,4663,5741,8233,9283,
%T 10781,11173,12391,14561,18397,20483,29303,29947,34651,37493,41203,
%U 46691,50821,54251,56897,57793,65213,68111,72073,76147,84631,89041
%N Centered heptagonal prime numbers.
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Centered_heptagonal_number">Centered heptagonal prime number</a>
%t lst={};Do[p=(7*n^2-7*n+2)/2;If[PrimeQ[p],AppendTo[lst,p]],{n,6!}];lst
%K nonn
%O 1,1
%A _Vladimir Joseph Stephan Orlovsky_, Sep 27 2008