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A259768 Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101 1
201, 299, 385, 451, 474, 835, 872, 968, 1532, 1794, 2116, 2746, 4218, 4546, 5038, 8578, 9510, 10852, 15782, 21068, 23626, 28628, 45684, 49942, 56506, 89228, 107618, 121770, 163652, 236042, 261164, 308318, 487320, 557176, 632898, 928294, 1212250 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A259770
LINKS
FORMULA
Empirical: a(n) = 3*a(n-7) +5*a(n-10) +a(n-13) -a(n-14) -a(n-17) -2*a(n-21) for n>24
EXAMPLE
Some solutions for n=4
..1..0..0..0..0..0....0..0..0..0..0..1....0..1..0..0..1..0....1..0..0..0..0..0
..0..0..0..0..1..0....0..1..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..1..0..0..1..0..0....0..0..1..0..0..1....0..0..0..0..0..0....0..0..0..1..0..0
..0..0..0..0..0..0....0..0..0..0..0..0....1..0..0..1..0..0....0..0..1..0..0..0
..1..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..1..0....0..0..0..0..0..0
..0..0..0..1..0..1....1..0..0..1..0..1....1..0..0..0..0..0....0..0..0..0..0..1
CROSSREFS
Sequence in context: A338591 A347887 A353081 * A076192 A157956 A202771
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 04 2015
STATUS
approved

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Last modified July 17 12:04 EDT 2024. Contains 374377 sequences. (Running on oeis4.)