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 A218847 #5 Jul 23 2025 00:07:35 %S A218847 1,616,9573,230726,4507281,91513161,1858438456,37821111242, %T A218847 770579589471,15693427613278,319526953387664,6505023784413466, %U A218847 132434218085749212,2696224146302670678 %N A218847 Unmatched value maps: number of 6Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..1 6Xn array. %C A218847 Row 6 of A218842 %e A218847 Some solutions for n=3 %e A218847 ..1..0..0....0..0..0....0..0..0....0..0..0....1..0..1....0..0..1....0..0..0 %e A218847 ..1..0..0....0..0..0....0..0..0....0..1..0....0..0..0....1..0..0....1..0..1 %e A218847 ..0..0..0....0..0..0....0..0..0....0..0..1....0..0..0....0..0..0....1..1..0 %e A218847 ..0..0..1....0..1..1....0..0..1....0..0..1....1..0..0....1..0..1....0..0..0 %e A218847 ..1..0..0....1..0..1....1..0..1....0..0..0....0..0..0....1..1..1....0..1..1 %e A218847 ..0..0..1....0..0..0....0..0..1....1..0..0....0..0..0....1..1..1....1..0..0 %K A218847 nonn %O A218847 1,2 %A A218847 _R. H. Hardin_ Nov 07 2012