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A219437 Unmatched value maps: number of nX4 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX4 array 1
7, 39, 281, 1750, 11283, 72272, 465400, 2995163, 19264275, 123892153, 796864416, 5125652937, 32969253934, 212061980660, 1364004538375, 8773442559359, 56431907119815, 362977142538622, 2334713999344447, 15017169783617850 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A219441

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..109

FORMULA

Empirical: a(n) = 8*a(n-1) -12*a(n-2) +6*a(n-3) +77*a(n-4) -184*a(n-5) -385*a(n-6) +137*a(n-7) +1716*a(n-8) +983*a(n-9) -3491*a(n-10) -525*a(n-11) +2567*a(n-12) -7634*a(n-13) +5725*a(n-14) +1489*a(n-15) +3574*a(n-16) +1516*a(n-17) -12799*a(n-18) +706*a(n-19) -3864*a(n-20) +7628*a(n-21) +8580*a(n-22) -6068*a(n-23) -1312*a(n-24) +160*a(n-25) +224*a(n-26) +48*a(n-27)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A071082 A122884 A139173 * A219138 A138417 A207154

Adjacent sequences:  A219434 A219435 A219436 * A219438 A219439 A219440

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 20 2012

STATUS

approved

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Last modified September 18 12:35 EDT 2021. Contains 347527 sequences. (Running on oeis4.)