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 A054228 #8 Jan 25 2022 21:49:21 %S A054228 1,1,2,2,6,10,19,32,61,109,203,381,723,1371,2623,5040,9711,18781, %T A054228 36405,70710,137603,268242,523655,1023567,2002923,3923596,7693084, %U A054228 15097117,29649512,58271080,114596811,225504427,443998492,874651263,1723852015 %N A054228 Number of positive integers <= 2^n of form x^2 + 14 y^2. %Y A054228 Cf. A244037. %K A054228 nonn %O A054228 0,3 %A A054228 _David W. Wilson_