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A231970 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.

%I A231970 #7 Jul 23 2025 06:45:43
%S A231970 9,56,841,43983,6507601,2641967397,3036560660329,9981109155098235,
%T A231970 93538123901225727364,2480246214908598898309094,
%U A231970 186787722909431013956841219409,39975590681225962593258073864460074
%N A231970 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one.
%C A231970 Diagonal of A231977
%H A231970 R. H. Hardin, <a href="/A231970/b231970.txt">Table of n, a(n) for n = 1..15</a>
%e A231970 Some solutions for n=2
%e A231970 ..1..0..0....0..0..0....0..0..1....0..0..1....1..0..0....0..0..0....0..1..0
%e A231970 ..0..0..0....1..1..1....1..0..0....1..0..1....1..0..0....0..0..0....0..0..0
%e A231970 ..0..0..1....0..0..0....0..0..0....0..0..0....0..0..0....0..1..1....0..0..1
%K A231970 nonn
%O A231970 1,1
%A A231970 _R. H. Hardin_, Nov 16 2013