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A218819 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX4 array.

%I A218819 #6 Jul 23 2025 00:05:54
%S A218819 7,108,1028,8961,80692,720305,6449353,57696032,516297052,4619740712,
%T A218819 41337798409,369890905178,3309794955133,29616122507437,
%U A218819 265005821287188,2371278692119396,21218261329031222,189861534294482599
%N A218819 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any king-move neighbor in a random 0..2 nX4 array.
%C A218819 Column 4 of A218823
%H A218819 R. H. Hardin, <a href="/A218819/b218819.txt">Table of n, a(n) for n = 1..41</a>
%F A218819 Empirical: a(n) = 13*a(n-1) -30*a(n-2) -97*a(n-3) +386*a(n-4) -89*a(n-5) -794*a(n-6) +557*a(n-7) +352*a(n-8) -279*a(n-9) -56*a(n-10) +40*a(n-11) +7*a(n-12) -3*a(n-13) for n>14
%e A218819 Some solutions for n=3
%e A218819 ..0..0..1..0....1..1..0..1....1..0..0..0....0..1..0..0....1..1..1..0
%e A218819 ..0..0..0..1....0..0..0..1....0..0..1..1....0..1..0..1....0..0..0..0
%e A218819 ..1..0..0..1....1..1..0..1....0..0..0..0....0..0..0..0....0..1..0..0
%K A218819 nonn
%O A218819 1,1
%A A218819 _R. H. Hardin_ Nov 06 2012