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 A183806 1/16 the number of (n+1)X5 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 1

%I

%S 27,237,1953,16953,143191,1232595,10494847,89998565,768481445,

%T 6579905737,56244325315,481279798699,4115586970547,35208336763197,

%U 301125201891953,2575843502271345,22031666094964551,188453144399278867

%N 1/16 the number of (n+1)X5 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor

%C Column 4 of A183811

%H R. H. Hardin, <a href="/A183806/b183806.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n)=6*a(n-1)+81*a(n-2)-425*a(n-3)-1968*a(n-4)+10277*a(n-5)+16576*a(n-6)-92864*a(n-7)-64803*a(n-8)+320262*a(n-9)+224743*a(n-10)-99955*a(n-11)-959780*a(n-12)-1547921*a(n-13)+2262032*a(n-14)+2523060*a(n-15)-1692000*a(n-16)-1053000*a(n-17)

%e Some solutions with upper left block zero for 3X5

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2011

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Last modified November 27 10:34 EST 2022. Contains 358368 sequences. (Running on oeis4.)