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 A248213 #14 Nov 11 2024 03:57:09 %S A248213 1,1,1,2,2,2,1,1,2,3,4,4,1,2,3,1,3,5,4,5,4,3,7,7,7,2,7,6,1,5,6,8,8,4, %T A248213 8,6,2,4,9,6,5,9,9,8,7,9,2,4,10,8,10,6,4,9,5,11,1,5,11,6,2,10,1,12,4, %U A248213 2,7,1,11,12,10,3,7,5,1,10,12,13,7,13,13,11,10,13,4,5,11,13,14,14,4,3,6,12,11,7,12,14,8,2 %N A248213 Values of y in A033210 (primes of the form x^2+13*y^2). %H A248213 Zak Seidov, <a href="/A248213/a248213.txt">Table of n, A033210(n), A248212(n) and A248213(n) for n =1,10000.</a> %F A248213 a(n) = sqrt((A033210(n)-A248212(n)^2)/13). %Y A248213 Cf. A033210, A248212 (values of x). %K A248213 nonn %O A248213 1,4 %A A248213 _Zak Seidov_, Oct 04 2014