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 A092574 #15 Feb 16 2025 08:32:52 %S A092574 4,7,12,13,19,21,28,31,37,39,43,49,52,57,61,67,73,76,79,84,91,93,97, %T A092574 103,109,111,124,127,129,133,139,147,148,151,156,157,163,169,172,181, %U A092574 183,193,196,199,201,211,217,219,223,228,229,237,241,244,247,259,268 %N A092574 Positive integers that can be represented in the form x^2 + 3y^2 with (x,y) = 1 and x and y positive. %C A092574 Superset of primes of the form 6n+1 (A002476). %C A092574 For all proper solutions with nonnegative x and y see A244819. - _Wolfdieter Lang_, Mar 02 2021 %H A092574 E. Akhtarkavan, M. F. M. Salleh and O. Sidek, <a href="https://www.idosi.org/wasj/wasj21(2)13/2.pdf">Multiple Descriptions Video Coding Using Coinciding Lattice Vector Quantizer for H.264/AVC and Motion JPEG2000</a>, World Applied Sciences Journal 21 (2): 157-169, 2013. - From _N. J. A. Sloane_, Feb 11 2013 %H A092574 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Eulers6nPlus1Theorem.html">Eulers 6n Plus 1 Theorem</a> %Y A092574 Cf. A002476, A092572, A092573, A092575, A244819. %K A092574 nonn %O A092574 1,1 %A A092574 _Eric W. Weisstein_, Feb 28 2004