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 A220760 #6 Jul 23 2025 01:27:16 %S A220760 236,15724,2715804,252705768,30118695378,3442732323766, %T A220760 390885525849628,44672658134562232,5096442065865772706, %U A220760 581473363549735322116,66354356746681426011986,7571457447988696073877188 %N A220760 Number of nX6 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..3 nX6 array. %C A220760 Column 6 of A220761 %H A220760 R. H. Hardin, <a href="/A220760/b220760.txt">Table of n, a(n) for n = 1..22</a> %e A220760 Some solutions for n=3 %e A220760 ..0..0..0..2..2..3....0..1..0..1..1..2....0..0..0..1..1..3....0..0..2..3..2..2 %e A220760 ..0..0..0..2..0..3....0..0..0..2..1..1....0..0..0..2..0..1....0..0..0..0..1..1 %e A220760 ..0..1..0..2..0..0....0..2..0..3..1..3....0..0..2..3..0..0....0..0..0..0..1..1 %K A220760 nonn %O A220760 1,1 %A A220760 _R. H. Hardin_ Dec 19 2012