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R. H. Hardin, <a href="/A259767/b259767.txt">Table of n, a(n) for n = 1..210</a>
allocated for R. H. Hardin
Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101
104, 167, 256, 385, 612, 1108, 1708, 2700, 4660, 7378, 11350, 19232, 31280, 48032, 80218, 131336, 202926, 335260, 550228, 857598, 1403502, 2304624, 3618252, 5883582, 9653232, 15248198, 24687220, 40439420, 64203790, 103643474, 169453708
1,1
Column 3 of A259770
Empirical: a(n) = 3*a(n-3) +3*a(n-6) +4*a(n-7) -2*a(n-9) +2*a(n-11) -8*a(n-13) +6*a(n-14) for n>17
Some solutions for n=4
..0..0..1..0..0....0..1..0..0..0....0..0..1..0..1....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..1....0..0..0..0..0....0..0..0..1..0
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..1..0..0
..0..0..1..0..0....0..1..0..0..0....1..0..0..1..0....0..0..0..0..0
..0..1..0..0..0....1..0..0..0..1....0..0..0..0..1....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....1..0..0..0..0....1..0..1..0..0
Cf. A259770
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nonn
R. H. Hardin, Jul 04 2015
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allocated for R. H. Hardin
allocated
approved