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A260172 Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001 1

%I

%S 183,419,1054,2598,6813,17889,46263,119681,316052,821743,2142670,

%T 5594790,14648190,38111650,99634628,260110994,679357192,1771602718,

%U 4630032186,12081675926,31547816516,82338811496,215053875128,561241973258

%N Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000101 or 00010001

%C Column 3 of A260177

%H R. H. Hardin, <a href="/A260172/b260172.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 3*a(n-2) +3*a(n-3) +14*a(n-4) -a(n-5) +18*a(n-6) +51*a(n-7) -28*a(n-8) -89*a(n-9) +185*a(n-10) -62*a(n-11) -246*a(n-12) +30*a(n-13) -128*a(n-14) -113*a(n-15) +80*a(n-16) -301*a(n-17) -83*a(n-18) -50*a(n-19) -118*a(n-20) +118*a(n-21) +48*a(n-22) -86*a(n-23) +38*a(n-24) +30*a(n-25) -6*a(n-26) +2*a(n-27) -4*a(n-30) for n>31

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A260177

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 17 2015

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Last modified July 16 12:19 EDT 2019. Contains 325079 sequences. (Running on oeis4.)