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 A295169 #18 Nov 28 2017 12:38:05 %S A295169 1,3,65,5757 %N A295169 a(n) = smallest number k with n prime factors such that (2d)^2 + (k/d)^2 is prime for every d | k. %C A295169 Such k must be an odd squarefree number. %C A295169 Conjecture: the sequence is infinite. %C A295169 a(4) > 10^10 if it exists. - _Charles R Greathouse IV_, Nov 28 2017 %Y A295169 Subsequence of A236423(n+1)/2 for n > 0. %Y A295169 Cf. A295124. %K A295169 nonn,more %O A295169 0,2 %A A295169 _Thomas Ordowski_, Nov 16 2017 %E A295169 a(3) from _Paolo P. Lava_, Nov 16 2017