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 A046110 #10 Feb 16 2025 08:32:38 %S A046110 2,2,6,2,2,2,6,6,6,2,2,2,10,2,6,2,2,6,6,6,6,2,6,2,2,6,6,6,2,2,6,2,18, %T A046110 2,2,2,6,10,2,2,2,2,18,6,6,6,2,6,6,2,6,2,6,2,6,6,6,6,6,6,2,6,14,2,2,2, %U A046110 2,6,6,2,2,6,18,2,6,2,6,6,6,6,2,2,6,2,10,2,6,10,2,2,6,6,18,6,2,2,6,18 %N A046110 Number of lattice points on circumference of a circle of radius (2n+1)/2 with center at (1/2,0). %H A046110 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/CircleLatticePoints.html">Circle Lattice Points.</a> %F A046110 a(n) = 4 * A046080(2*n+1) + 2. - _Sean A. Irvine_, Apr 02 2021 %Y A046110 Cf. A046109. %K A046110 nonn %O A046110 0,1 %A A046110 _Eric W. Weisstein_