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 A218054 #6 Jul 22 2025 23:46:53 %S A218054 236,236,55696,1171452,49284832,1673074136,62191743600,2242118119704, %T A218054 81495204878500,2952333174631968,107107891606534260, %U A218054 3884506734259301980,140899267766085433488,5110430887506615362216,185358543874705571367220 %N A218054 Number of nX6 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random 0..3 nX6 array. %C A218054 Column 6 of A218056 %H A218054 R. H. Hardin, <a href="/A218054/b218054.txt">Table of n, a(n) for n = 1..170</a> %e A218054 Some solutions for n=3 %e A218054 ..3..1..0..0..0..1....3..3..3..3..1..1....0..0..0..0..0..0....1..1..1..2..0..0 %e A218054 ..1..1..0..0..0..1....3..1..1..1..1..1....0..0..0..0..0..0....1..0..0..0..0..0 %e A218054 ..1..1..1..2..1..1....3..1..1..1..2..3....3..1..0..0..0..1....2..0..0..0..3..3 %K A218054 nonn %O A218054 1,1 %A A218054 _R. H. Hardin_ Oct 19 2012