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 A141226 #3 Mar 30 2012 17:22:50 %S A141226 1,3,11,23,27,35,39,47,59,95,147,167,179,207,219,227,279,347,363,399, %T A141226 543,567,587,627,767,779,935 %N A141226 Numbers n such that the central point of the square n x n lattice sees the maximal number of points. %C A141226 These n are the numbers for which A141225(n) is odd. Note that n must be odd. When A141225(n)=1, the central point is the only point seeing the maximal number of points. Except for 1, these numbers are 3 or 11 (mod 12). %C A141226 These numbers also seem to produce cubic n x n x n lattices in which the central point has maximal visibility; see A141228. Note that for n>3, n-1 is twice a prime in A141246. %K A141226 nonn %O A141226 1,2 %A A141226 _T. D. Noe_, Jun 15 2008, Jun 17 2008