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 A243182 #10 Jul 07 2023 12:32:12
%S A243182 0,2,5,8,9,17,18,20,26,29,32,36,41,45,50,53,65,68,72,74,80,81,89,90,
%T A243182 98,101,104,113,116,117,122,125,128,137,144,146,149,153,162,164,170,
%U A243182 173,180,185,194,197,200,212,218,221,225,233,234,242,245,257,260,261,269,272,281,288,290,293,296,305,306,314,317,320,324,333,338,353,356,360,362,365,369
%N A243182 Numbers of the form 2x^2+2xy+5y^2.
%C A243182 Discriminant -36.
%C A243182 All terms mod 12 are in {0, 2, 5, 6, 8, 9}. - _R. J. Mathar_, Jul 07 2023
%H A243182 N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)
%Y A243182 Primes: A243183.
%K A243182 nonn
%O A243182 1,2
%A A243182 _N. J. A. Sloane_, Jun 02 2014