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A260068
Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111
1
2131, 5776, 16344, 34917, 77061, 251582, 660896, 1470739, 4080236, 12463280, 30924518, 77105282, 228211895, 637935403, 1599037659, 4357701023, 12595214555, 33560728043, 87859868123, 246975122762, 686765810423, 1818066574783
OFFSET
1,1
COMMENTS
Column 6 of A260070
FORMULA
Appears to satisfy a recurrence of order 69 (see link above)
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0..0..0....0..1..0..0..1..0..0..0....0..1..1..0..0..1..1..0
..0..0..1..1..0..0..0..1....0..1..0..0..1..0..0..1....0..1..1..0..0..1..1..0
..0..0..1..1..0..0..1..1....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0
..0..0..0..0..0..0..0..0....1..0..0..1..0..0..1..1....1..0..0..1..0..0..1..0
..1..1..0..0..1..0..0..1....0..0..0..1..0..0..1..1....1..0..0..1..0..0..0..1
CROSSREFS
Sequence in context: A210271 A066817 A110024 * A237070 A157768 A067199
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 14 2015
STATUS
approved