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A219436 Unmatched value maps: number of nX3 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX3 array 1
4, 18, 78, 329, 1396, 5925, 25147, 106731, 452984, 1922547, 8159665, 34631193, 146981443, 623817540, 2647601755, 11236931619, 47691701338, 202412762994, 859078738551, 3646095572825, 15474731627673, 65677740521441 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A219441

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-1) +a(n-2) +a(n-3) -2*a(n-4) -6*a(n-5) -3*a(n-6) -2*a(n-7) +5*a(n-8) +4*a(n-9) -2*a(n-10) -2*a(n-11)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A017959 A100069 A058870 * A219137 A240342 A208309

Adjacent sequences:  A219433 A219434 A219435 * A219437 A219438 A219439

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 20 2012

STATUS

approved

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Last modified September 20 07:32 EDT 2021. Contains 347577 sequences. (Running on oeis4.)