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A283411 Number of nX4 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors. 1
16, 236, 2944, 39268, 519252, 6865368, 90803472, 1200890168, 15882218184, 210047690772, 2777952473964, 36739369719812, 485890702739492, 6426070385501460, 84986974086126936, 1123981738831575460 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A283415.

LINKS

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

FORMULA

Empirical: a(n) = 8*a(n-1) +58*a(n-2) +137*a(n-3) +127*a(n-4) +60*a(n-5) -128*a(n-6) +83*a(n-7) -150*a(n-8) +97*a(n-9) -59*a(n-10) +32*a(n-11) -9*a(n-12) +a(n-13) for n>15

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A283415.

Sequence in context: A283853 A266099 A264343 * A161591 A227440 A103975

Adjacent sequences:  A283408 A283409 A283410 * A283412 A283413 A283414

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 07 2017

STATUS

approved

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Last modified May 17 10:16 EDT 2022. Contains 353745 sequences. (Running on oeis4.)