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A259638 Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001 1

%I

%S 133,365,1483,4146,12348,42524,133078,406770,1313046,4180198,13059524,

%T 41407226,131557812,414760302,1310911640,4153427590,13129841142,

%U 41501667938,131324101864,415367424944,1313373627382,4154238856134

%N Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001

%C Column 4 of A259642

%H R. H. Hardin, <a href="/A259638/b259638.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +2*a(n-2) +16*a(n-3) +7*a(n-4) -14*a(n-5) -45*a(n-6) -14*a(n-7) +5*a(n-8) +38*a(n-9) +13*a(n-10) -6*a(n-11) -6*a(n-12) for n>13

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A259642

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 02 2015

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Last modified May 25 11:17 EDT 2019. Contains 323539 sequences. (Running on oeis4.)