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 A359254 #13 Dec 24 2022 11:06:02 %S A359254 4,26,96,216,480,882,1564,2464,3804,5502,7912,10864,14816,19526,25508, %T A359254 32392,40992,50818,62852,76432,92460,110590,131904,155306,182316, %U A359254 212188,246316,283586,326100 %N A359254 Number of edges among all distinct circles that can be constructed from n equally spaced points along a line using only a compass. %C A359254 A circle is constructed for every pair of the n points, the first point defines the circle's center while the second the radius distance. The number of distinct circles constructed for n points is A001859(n-1). %C A359254 See A359252 and A359253 for images of the circles. %F A359254 a(n) = A359252(n) + A359253(n) - 1 by Euler's formula. %Y A359254 Cf. A359252 (vertices), A359253 (regions), A359258 (k-gons), A001859, A290866, A359047, A358783. %K A359254 nonn,more %O A359254 2,1 %A A359254 _Scott R. Shannon_, Dec 22 2022