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 A220332 #5 Jul 23 2025 01:04:11 %S A220332 1,114,2788,76627,2065264,59893608,1653121774 %N A220332 Equals two maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 5Xn array. %C A220332 Row 5 of A220328 %e A220332 Some solutions for n=3 %e A220332 ..0..0..0....0..0..1....0..0..0....0..1..0....0..1..0....0..1..1....0..0..0 %e A220332 ..1..1..0....1..1..0....0..1..0....1..1..0....1..0..1....0..0..0....0..1..0 %e A220332 ..0..0..0....0..0..0....0..1..1....1..0..1....1..0..1....0..1..0....0..1..0 %e A220332 ..0..1..0....1..1..1....0..1..0....1..0..1....1..0..1....0..1..1....0..1..1 %e A220332 ..0..0..0....0..1..0....0..1..0....0..1..0....0..0..0....1..0..0....0..1..0 %K A220332 nonn %O A220332 1,2 %A A220332 _R. H. Hardin_ Dec 10 2012