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A220065 Majority value maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and vertical neighbors in a random 0..1 nX2 array 2
2, 6, 19, 65, 222, 776, 2682, 9310, 32288, 112036, 388710, 1348756, 4679860, 16238178, 56343110, 195499228, 678342902, 2353713428, 8166912404, 28337544624, 98325585264, 341170022526, 1183791422522, 4107518363162, 14252263353112 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A220070

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 3*a(n-1) +2*a(n-2) -a(n-3) +a(n-4) -4*a(n-5) -8*a(n-6) -6*a(n-7) -a(n-8) -9*a(n-9) -a(n-10) +14*a(n-11) +4*a(n-12) +20*a(n-13) -4*a(n-14) +4*a(n-15) -4*a(n-16) for n>17

EXAMPLE

Some solutions for n=3

..1..1....1..1....0..0....1..1....1..1....1..1....1..1....1..1....0..0....0..1

..0..1....0..0....0..0....1..0....1..1....0..0....1..1....0..1....0..0....1..1

..0..1....0..0....1..1....1..0....1..1....1..1....0..1....1..1....0..0....1..0

CROSSREFS

Sequence in context: A216447 A069728 A150083 * A047016 A307354 A307487

Adjacent sequences:  A220062 A220063 A220064 * A220066 A220067 A220068

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 03 2012

STATUS

approved

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Last modified September 24 10:57 EDT 2020. Contains 337317 sequences. (Running on oeis4.)