A175233 - OEIS

%I #7 Aug 28 2019 13:09:36

%S 2,3,4,5,7,8,9,10,11,12,14,16,19,24,27,28,29,33,39,45,49,58,64,69,74,

%T 80,81,82,89,97,104,110,113,114,121,127,128,132,141,150,154,160,165,

%U 169,171,180,193,197,208,212,217,220,222,227,232,233,244,253,264,269,275

%N Numbers n with property that n and 4*n^2 + 163 are terms in A057605.

%C Numbers n with property that both m=4*n^2 + 163 and p=4*m^2 + 163 are primes.

%H Harvey P. Dale, <a href="/A175233/b175233.txt">Table of n, a(n) for n = 1..1000</a>

%F n = 2: m = 4*n^2 + 163 = 179 and p = 4*m^2 + 163 = 128327 are primes.

%t mpQ[n_]:=Module[{m=4n^2+163},And@@PrimeQ[{m,4m^2+163}]]; Select[Range[300], mpQ] (* _Harvey P. Dale_, Jul 15 2013 *)

%Y Intersection of A057604 and A057605.

%K nonn

%O 1,1

%A _Zak Seidov_, Mar 09 2010

%E Edited by _Zak Seidov_, Mar 17 2010