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A231841 Number of 3Xn 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.

%I A231841 #6 Jul 23 2025 06:43:36
%S A231841 64,422,4508,52411,678660,8887871,114873933,1472320155,18811450866,
%T A231841 240333888755,3072777642636,39304807956686,502807539383400,
%U A231841 6431904732538361,82273333965692552,1052378549019652099
%N A231841 Number of 3Xn 0..3 arrays with no element less than a strict majority of its horizontal and antidiagonal neighbors.
%C A231841 Row 3 of A231839
%H A231841 R. H. Hardin, <a href="/A231841/b231841.txt">Table of n, a(n) for n = 1..210</a>
%e A231841 Some solutions for n=4
%e A231841 ..3..3..2..0....3..2..2..1....3..2..1..0....1..1..1..3....2..2..3..0
%e A231841 ..0..0..0..0....2..2..1..1....2..1..0..0....0..0..2..0....0..0..0..1
%e A231841 ..3..3..1..1....3..3..2..2....3..3..1..1....0..0..0..1....2..3..2..2
%K A231841 nonn
%O A231841 1,1
%A A231841 _R. H. Hardin_, Nov 14 2013