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A183550 Number of nX5 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.

%I A183550 #7 Jul 22 2025 09:05:27
%S A183550 15,1325,46841,1728533,63868351,2359134621,87176303417,3221377019429,
%T A183550 119037100116183,4398697422258081,162542044954494221,
%U A183550 6006305685720331925,221946939432242106215,8201454756620862955585,303062796878789833114397
%N A183550 Number of nX5 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors.
%C A183550 Column 5 of A183554
%H A183550 R. H. Hardin, <a href="/A183550/b183550.txt">Table of n, a(n) for n = 1..200</a>
%e A183550 Some solutions for 3X5
%e A183550 ..1..1..0..0..1....2..2..2..0..0....0..0..1..1..1....1..1..0..0..0
%e A183550 ..0..0..0..0..1....2..2..1..2..2....0..1..0..2..2....0..0..2..0..1
%e A183550 ..1..1..0..1..1....0..0..1..1..2....1..1..0..0..2....2..2..2..2..1
%K A183550 nonn
%O A183550 1,1
%A A183550 _R. H. Hardin_ Jan 05 2011