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A217641 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..2 nX4 array.

%I A217641 #6 Jul 22 2025 23:42:12
%S A217641 17,91,877,8363,80653,779051,7531727,72877045,704989101,6820892171,
%T A217641 65993636901,638497154509,6177606843163,59769632055785,
%U A217641 578284005053917,5595022879846267,54133051863934891,523748973561990577
%N A217641 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random 0..2 nX4 array.
%C A217641 Column 4 of A217645
%H A217641 R. H. Hardin, <a href="/A217641/b217641.txt">Table of n, a(n) for n = 1..24</a>
%e A217641 Some solutions for n=3
%e A217641 ..1..0..0..1....2..1..1..1....0..0..1..0....1..1..0..0....0..0..1..1
%e A217641 ..0..0..0..1....1..1..1..1....0..2..0..0....0..0..0..0....0..1..1..1
%e A217641 ..0..0..0..2....1..1..1..1....2..1..0..0....0..0..0..1....2..1..1..1
%K A217641 nonn
%O A217641 1,1
%A A217641 _R. H. Hardin_ Oct 09 2012