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 A374935 #34 Oct 05 2024 16:29:08 %S A374935 25,36,49,64,81,100,121,134,153,172,193,212,233,252 %N A374935 Maximum number of squares covered (i.e., attacked) by 5 independent (i.e., nonattacking) queens on an n X n chessboard. %e A374935 5 X 5; 6 X 6; 7 X 7; 8 X 8; Center-square +4Queens separated as if 1,2 knights. %e A374935 at 11 X 11 and beyond this pattern seems to be 'best'. %e A374935 x x x x x x x x %e A374935 x x x x x x x x %e A374935 x x Q x x x x x %e A374935 x x x x x Q x x %e A374935 x x x Q x x x x %e A374935 x Q x x x x x x %e A374935 x x x x Q x x x %e A374935 x x x x x x x x %e A374935 9 X 9; 10 X 10; 11 X 11; Center-square +4Queens separated as 2,4 knights. %e A374935 x x x x x x x x x x x %e A374935 x x x x x x x Q x x x %e A374935 x x x x x x x x x x x %e A374935 x Q x x x x x x x x x %e A374935 x x x x x x x x x x x %e A374935 x x x x x Q x x x x x %e A374935 x x x x x x x x x x x %e A374935 x x x x x x x x x Q x %e A374935 x x x x x x x x x x x %e A374935 x x x Q x x x x x x x %e A374935 x x x x x x x x x x x %Y A374935 Column 5 of A376732. %Y A374935 Cf. A075324, A047461, A374933, A375116, A374933, A374934, A374936. %K A374935 nonn,more %O A374935 5,1 %A A374935 _John King_, Aug 08 2024 %E A374935 Unverified a(19) removed by _Andrew Howroyd_, Oct 05 2024