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A261110
Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101
1
183, 402, 1408, 3908, 13040, 35934, 121313, 333722, 1122579, 3092874, 10415091, 28671638, 96526178, 265814264, 894920841, 2464173816, 8296223239, 22844373272, 76910486512, 211778585434, 713000156702, 1963298223048, 6609877528867
OFFSET
1,1
COMMENTS
Column 5 of A261113
LINKS
FORMULA
Empirical: a(n) = 5*a(n-2) +35*a(n-4) +47*a(n-6) -39*a(n-8) -15*a(n-10) -71*a(n-12) +169*a(n-14) -113*a(n-16) +39*a(n-18) -10*a(n-20) +a(n-22) +a(n-24) for n>25
EXAMPLE
Some solutions for n=4
..1..0..1..0..1..0..0....0..1..0..1..0..1..0....0..1..0..1..0..1..0
..0..0..0..1..0..1..0....1..0..1..0..1..0..1....0..0..1..0..1..0..1
..1..0..1..0..1..0..1....0..1..0..1..0..1..0....0..1..0..1..0..0..0
..0..1..0..0..0..1..0....1..0..1..0..1..0..1....1..0..1..0..1..0..1
..1..0..1..0..1..0..1....0..1..0..1..0..1..0....0..1..0..0..0..1..0
..0..1..0..1..0..1..0....0..0..1..0..1..0..1....1..0..1..0..1..0..1
CROSSREFS
Sequence in context: A030465 A147270 A147124 * A260172 A252070 A370089
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 08 2015
STATUS
approved