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 A243183 #17 Jul 03 2025 09:28:36
%S A243183 2,5,17,29,41,53,89,101,113,137,149,173,197,233,257,269,281,293,317,
%T A243183 353,389,401,449,461,509,521,557,569,593,617,641,653,677,701,761,773,
%U A243183 797,809,821,857,881,929,941,953,977,1013,1049,1061,1097,1109,1181,1193,1217,1229,1277,1289,1301,1361,1373,1409,1433,1481,1493,1553,1601,1613,1637
%N A243183 Primes of the form 2x^2+2xy+5y^2.
%C A243183 Because all terms in A243182 are in {0, 2, 5, 6, 8, 9} (mod 12) and 5 is the only one in this set coprime to 12, this is (apart from the 2) a subsequence of A040117. - _R. J. Mathar_, Jul 07 2023
%C A243183 This sequence is actually equal to A040117, except for the additional initial a(1) = 2 here (and indexing of the remaining terms). - _M. F. Hasler_, Jul 03 2025
%H A243183 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 A243183 Primes in A243182.
%Y A243183 Cf. A040117 (the same without the initial 2 here).
%K A243183 nonn
%O A243183 1,1
%A A243183 _N. J. A. Sloane_, Jun 02 2014