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 A033201 #34 Sep 08 2022 08:44:51 %S A033201 11,19,41,59,89,131,139,179,211,241,251,281,331,379,401,409,419,449, %T A033201 491,499,521,569,571,601,619,641,659,691,739,761,769,809,811,859,881, %U A033201 929,971,1009,1019,1049,1051,1091,1129,1171,1201,1249,1259,1289,1291,1321,1361,1409,1451,1459,1481 %N A033201 Primes of the form x^2 + 10*y^2. %D A033201 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989, p. 36. %H A033201 Vincenzo Librandi and Ray Chandler, <a href="/A033201/b033201.txt">Table of n, a(n) for n = 1..10000</a> [First 2000 terms from Vincenzo Librandi] %H A033201 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) %F A033201 Same as primes congruent to 1, 9, 11, or 19 mod 40. See, e.g., Cox, p. 36. %F A033201 a(n) ~ 4n log n. - _Charles R Greathouse IV_, Nov 09 2012 %t A033201 Clear[f,lst,p,x,y]; f[x_,y_]:=x^2+10*y^2; lst={};Do[Do[p=f[x,y];If[PrimeQ[p]&&p<7212,AppendTo[lst,p]],{y,0,6!}],{x,0,6!}];Take[Union[lst],222] (* _Vladimir Joseph Stephan Orlovsky_, Aug 04 2009 *) %t A033201 QuadPrimes2[1, 0, 10, 10000] (* see A106856 *) %o A033201 (PARI) select(n->vecsearch([1,9,11,19],n%40), primes(100)) \\ _Charles R Greathouse IV_, Nov 09 2012 %o A033201 (Magma) [p: p in PrimesUpTo(1500) | NormEquation(10,p) eq true]; // _Bruno Berselli_, Jul 03 2016 %Y A033201 Cf. A139643. %Y A033201 Primes in A020673. %K A033201 nonn,easy %O A033201 1,1 %A A033201 _N. J. A. Sloane_