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A259510 Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0101 0111 1

%I #4 Jun 29 2015 15:23:40

%S 87,533,3270,20293,126045,784130,4879059,30366347,189000090,

%T 1176388523,7322185101,45575811794,283679519673,1765722127481,

%U 10990478900276,68408656100315,425799800891931,2650329642920874,16496595246904901

%N Number of (n+1)X(3+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0001 0101 0111

%C Column 3 of A259515

%H R. H. Hardin, <a href="/A259510/b259510.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 5*a(n-1) +20*a(n-2) -68*a(n-3) -97*a(n-4) +234*a(n-5) +159*a(n-6) -238*a(n-7) -94*a(n-8) +56*a(n-9) +8*a(n-10)

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A259515

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 29 2015

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Last modified July 13 13:53 EDT 2024. Contains 374284 sequences. (Running on oeis4.)