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Number of (n+4)X9 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s
1

%I #5 Mar 31 2012 12:35:51

%S 4,59,498,1577,8702,42613,210362,1459669,7676361,44631710,307975889,

%T 1766468801,10941194118,74842408447,452000693891,2882180117494,

%U 19523455903949,121423010910314,784247000876085,5259836130609437

%N Number of (n+4)X9 binary arrays with every 1 having exactly three king-move neighbors equal to 1 but with no 2X2 blocks of 1s

%C Column 5 of A183465

%H R. H. Hardin, <a href="/A183462/b183462.txt">Table of n, a(n) for n = 1..106</a>

%e Some solutions for 7X9

%e ..0..0..1..1..0..1..0..0..0....0..0..0..0..0..1..0..0..0

%e ..0..1..1..0..1..1..1..0..0....0..0..0..0..1..1..1..0..0

%e ..1..0..0..0..0..0..0..1..0....0..0..0..1..0..0..0..1..0

%e ..1..1..0..0..0..0..0..1..1....0..0..1..1..0..0..0..1..1

%e ..1..0..0..0..0..1..0..1..0....0..0..0..1..0..1..0..1..0

%e ..0..1..1..0..1..1..1..0..0....0..0..0..0..1..1..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 2011