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A203086
Number of (n+2)X5 binary arrays avoiding patterns 000 and 101 in rows and columns
1
621, 2237, 7558, 26528, 92748, 319956, 1110338, 3857116, 13368366, 46374172, 160928422, 558198034, 1936342232, 6717789912, 23304299530, 80843139172, 280454591492, 972921980908, 3375134923804, 11708636231942, 40618271541636
OFFSET
1,1
COMMENTS
Column 3 of A203091
LINKS
FORMULA
Empirical: a(n) = a(n-1) +2*a(n-2) +19*a(n-3) +17*a(n-4) +5*a(n-5) -57*a(n-6) -51*a(n-7) +48*a(n-8) +197*a(n-9) -63*a(n-10) -429*a(n-11) -144*a(n-12) +443*a(n-13) +246*a(n-14) -220*a(n-15) -81*a(n-16) +58*a(n-17) -65*a(n-18) +10*a(n-19) +49*a(n-20) +20*a(n-21) +20*a(n-22) for n>24
EXAMPLE
Some solutions for n=3
..0..1..1..1..1....0..0..1..1..0....1..1..0..0..1....1..0..0..1..0
..1..1..1..1..1....1..1..1..1..1....1..1..0..0..1....0..0..1..0..0
..0..1..1..1..1....0..1..1..0..0....0..0..1..1..0....0..1..0..0..1
..0..1..1..1..0....0..1..1..0..0....0..0..1..1..0....1..0..0..1..1
..1..0..0..1..0....1..0..0..1..1....1..1..1..1..1....0..0..1..0..0
CROSSREFS
Sequence in context: A232422 A335767 A189119 * A251243 A184226 A260764
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 29 2011
STATUS
approved