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%I #6 Dec 13 2014 16:57:50
%S 200,346,817,2081,5610,15593,43618,122839,347075,981466,2777062,
%T 7859985,22247952,62976844,178273840,504659106,1428597686,4044117989,
%U 11448226797,32408025216,91741786804,259705969673,735184974976,2081188160674
%N Number of (n+2)X(2+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 4
%C Column 2 of A252065
%H R. H. Hardin, <a href="/A252059/b252059.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 3*a(n-1) -a(n-2) +10*a(n-3) -24*a(n-4) +a(n-5) -27*a(n-6) +62*a(n-7) +7*a(n-8) +27*a(n-9) -51*a(n-10) -2*a(n-11) -9*a(n-12) -37*a(n-13) -48*a(n-14) -a(n-15) +95*a(n-16) +85*a(n-17) +9*a(n-18) -55*a(n-19) -46*a(n-20) -16*a(n-21) -7*a(n-23) +6*a(n-24) +13*a(n-25) +13*a(n-26) +4*a(n-27) -5*a(n-28) -3*a(n-29) -2*a(n-30) for n>32
%e Some solutions for n=4
%e ..2..2..1..2....2..1..2..0....2..2..2..2....1..2..2..2....0..1..2..2
%e ..2..2..2..2....2..2..1..2....2..2..2..2....2..2..2..2....1..2..2..2
%e ..2..2..2..2....1..2..2..1....2..1..2..2....2..2..2..1....2..2..1..2
%e ..2..2..2..2....2..2..2..2....2..2..2..2....1..2..2..2....2..2..2..2
%e ..2..2..2..2....2..2..2..2....2..2..1..2....2..2..2..2....2..2..2..1
%e ..1..2..2..1....1..2..2..2....1..2..2..2....2..1..2..2....1..2..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 13 2014
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