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 A298085 #6 May 19 2024 20:55:11 %S A298085 0,13,7,76,520,2767,11202,66148,385999,2040394,11280309,63669582, %T A298085 352938921,1954934444,10928716512,60920261087,339016489892, %U A298085 1890631777955,10543750377805,58766637746893,327645644514925,1827099377713191 %N A298085 Number of n X 6 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. %C A298085 Column 6 of A298087. %H A298085 R. H. Hardin, <a href="/A298085/b298085.txt">Table of n, a(n) for n = 1..210</a> %e A298085 Some solutions for n=7 %e A298085 ..0..0..1..1..1..1. .0..0..1..1..1..1. .0..0..0..0..0..1. .0..1..1..1..0..0 %e A298085 ..0..1..0..0..0..1. .0..1..0..0..0..1. .0..1..1..0..1..1. .0..0..1..0..1..0 %e A298085 ..0..1..0..1..1..0. .0..1..1..0..1..0. .0..1..0..0..0..0. .0..1..1..1..0..1 %e A298085 ..1..0..1..1..0..0. .0..1..0..0..0..1. .0..0..0..0..1..0. .1..1..1..1..0..1 %e A298085 ..1..1..1..1..1..1. .0..0..0..0..1..0. .1..1..0..1..1..0. .1..0..0..0..0..1 %e A298085 ..1..0..1..1..0..1. .1..1..0..1..1..0. .0..1..0..0..1..0. .0..1..0..1..0..1 %e A298085 ..0..0..0..1..0..0. .1..1..0..0..0..0. .0..0..1..1..0..0. .0..0..1..0..1..1 %Y A298085 Cf. A298087. %K A298085 nonn %O A298085 1,2 %A A298085 _R. H. Hardin_, Jan 12 2018