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 A106890 #27 May 24 2022 02:43:04 %S A106890 11,13,17,23,31,41,47,53,59,67,79,83,101,103,107,109,127,139,167,181, %T A106890 193,197,229,239,251,281,283,293,307,311,317,337,353,359,367,379,397, %U A106890 401,431,439,443,461,479,487,509,541,547,557,563,569,599,613,617,619 %N A106890 Primes of the form x^2 + xy + 11y^2, with x and y nonnegative. %C A106890 Discriminant = -43. %C A106890 Rational primes that decompose in the field Q(sqrt(-43)). - _N. J. A. Sloane_, Dec 25 2017 %H A106890 Ray Chandler, <a href="/A106890/b106890.txt">Table of n, a(n) for n = 1..10000</a> (first 1000 terms from Vincenzo Librandi) %H A106890 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) %H A106890 <a href="/index/Pri#primes_decomp_of">Index to sequences related to decomposition of primes in quadratic fields</a> %t A106890 QuadPrimes2[1, 1, 11, 10000] (* see A106856 *) %K A106890 nonn,easy %O A106890 1,1 %A A106890 _T. D. Noe_, May 09 2005