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.
%I A162587 #8 Jul 22 2025 06:55:51
%S A162587 23,31,47,71,79,103,127,151,167,199,223,263,367,439,487,607,631,647,
%T A162587 727,823,887,967,1031,1087,1303,1327,1367,1447,1543,1567,1607,1879,
%U A162587 1951,2207,2311,2503,2647,2671,2887,3079,3271,3463,3527,3607,3727,3847,3967
%N A162587 Prime numbers p = 8n + 7 for which k = (7 * (256^n - 16^n) + n^2) / (n * p) is an integer.
%H A162587 Harvey P. Dale, <a href="/A162587/b162587.txt">Table of n, a(n) for n = 1..1000</a>
%t A162587 Transpose[Select[Table[{n,8n+7},{n,500}],PrimeQ[Last[#]]&&IntegerQ[(7*(256^First[ #]-16^First[#])+First[#]^2)/Times@@#]&]][[2]] (* _Harvey P. Dale_, Sep 13 2014 *)
%Y A162587 Cf. A162586
%Y A162587 Cf. A158034, A158035
%Y A162587 Cf. A161896, A161897
%K A162587 easy,nonn
%O A162587 1,1
%A A162587 _Reikku Kulon_, Jul 07 2009