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A219084 Hilltop maps: number of 7Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 7Xn array.

%I A219084 #6 Jul 23 2025 00:13:34
%S A219084 1,7361,1019123,99118753,11660290321,1410242020653,167024618548071,
%T A219084 19746897662050241,2339794277074504521,277259160805907947953,
%U A219084 32846897167510082525531,3891392293661362699294561
%N A219084 Hilltop maps: number of 7Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal, diagonal or antidiagonal neighbor in a random 0..1 7Xn array.
%C A219084 Row 7 of A219078
%H A219084 R. H. Hardin, <a href="/A219084/b219084.txt">Table of n, a(n) for n = 1..19</a>
%e A219084 Some solutions for n=3
%e A219084 ..0..0..1....0..0..0....0..0..0....0..0..1....0..0..0....0..0..1....0..0..1
%e A219084 ..0..1..1....1..1..1....1..1..0....0..1..1....1..1..1....0..1..0....0..1..0
%e A219084 ..0..0..0....0..1..0....0..0..1....0..1..0....0..0..1....1..0..1....0..1..1
%e A219084 ..0..1..1....0..1..0....0..1..0....0..1..1....0..0..0....0..0..0....0..0..1
%e A219084 ..1..0..0....1..1..0....1..1..0....1..1..1....1..1..1....0..1..1....0..1..1
%e A219084 ..0..1..0....1..1..1....1..1..1....1..0..1....0..1..1....1..1..1....0..0..1
%e A219084 ..1..0..0....0..0..1....0..0..0....1..1..1....0..0..1....1..0..0....1..0..1
%K A219084 nonn
%O A219084 1,2
%A A219084 _R. H. Hardin_ Nov 11 2012