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A209645 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 0 1 vertically.

%I A209645 #9 Jul 22 2025 21:52:26
%S A209645 2,16,102,630,4690,34012,287140,2364992,22028490,200930125,2026692954,
%T A209645 20118254688,217071252489,2316174126448,26506083938686,
%U A209645 301219138880440,3632894429145798,43657425153387876,552138493209771090
%N A209645 Number of n X n 0..1 arrays avoiding 0 0 1 and 1 0 0 horizontally and 0 0 1 and 1 0 1 vertically.
%C A209645 Diagonal of A209650
%H A209645 R. H. Hardin, <a href="/A209645/b209645.txt">Table of n, a(n) for n = 1..38</a>
%e A209645 Some solutions for n=4
%e A209645 ..0..1..0..1....1..1..0..1....0..0..0..0....1..0..1..1....1..0..1..0
%e A209645 ..0..0..0..0....1..1..1..0....0..0..0..0....0..1..1..0....0..1..1..0
%e A209645 ..0..0..0..0....0..1..1..0....0..0..0..0....0..1..1..0....0..0..0..0
%e A209645 ..0..0..0..0....0..1..1..0....0..0..0..0....0..1..1..0....0..0..0..0
%K A209645 nonn
%O A209645 1,1
%A A209645 _R. H. Hardin_ Mar 11 2012