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A207456
Number of 5 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 1 vertically.
1
10, 100, 270, 1450, 5200, 23530, 92610, 396100, 1610950, 6754210, 27799200, 115710130, 478341370, 1985702500, 8222193630, 34098329530, 141276194800, 585672013210, 2427100765650, 10060368444100, 41694947333590
OFFSET
1,1
COMMENTS
Row 5 of A207453.
LINKS
FORMULA
Empirical: a(n) = a(n-1) + 13*a(n-2) + 4*a(n-3) - 16*a(n-4).
Empirical g.f.: 10*x*(1 + 9*x + 4*x^2 - 16*x^3) / (1 - x - 13*x^2 - 4*x^3 + 16*x^4). - Colin Barker, Jun 23 2018
EXAMPLE
Some solutions for n=5:
1 1 1 1 1 1 0 1 1 0 0 1 0 1 0 0 1 0 1 0
1 1 1 1 1 1 1 0 1 1 1 1 0 1 0 1 1 0 1 0
0 1 0 1 1 0 1 0 1 0 1 1 0 1 0 0 1 0 1 0
0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 0
0 1 0 1 0 0 1 0 1 0 1 1 0 1 0 0 1 0 1 0
CROSSREFS
Cf. A207453.
Sequence in context: A207602 A207028 A207173 * A208836 A208684 A207348
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2012
STATUS
approved