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 A054226 #8 Jan 25 2022 21:49:40 %S A054226 1,1,2,2,7,10,19,34,60,112,214,400,761,1450,2774,5341,10322,19992, %T A054226 38823,75551,147250,287503,562102,1100266,2155940,4228715,8301245, %U A054226 16309119,32064447,63082900,124181649,244597440,482026958,950392529 %N A054226 Number of positive integers <= 2^n of form x^2 + 11 y^2. %Y A054226 Cf. A243651. %K A054226 nonn %O A054226 0,3 %A A054226 _David W. Wilson_