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A283853 Number of nX4 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors. 1
16, 233, 2776, 35373, 448490, 5676420, 71903903, 910712188, 11534678940, 146094562780, 1850383484231, 23436321812180, 296836434645831, 3759628625285727, 47618168759118637, 603115420174313641 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A283857.

LINKS

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

FORMULA

Empirical: a(n) = 11*a(n-1) +21*a(n-2) +29*a(n-3) -328*a(n-4) -309*a(n-5) +4*a(n-6) +1138*a(n-7) +404*a(n-8) -1281*a(n-9) +253*a(n-10) +24*a(n-11) +904*a(n-12) -475*a(n-13) +164*a(n-14) -138*a(n-15) +24*a(n-16) -2*a(n-17)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A283857.

Sequence in context: A222938 A265469 A111096 * A266099 A264343 A283411

Adjacent sequences:  A283850 A283851 A283852 * A283854 A283855 A283856

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 17 2017

STATUS

approved

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Last modified May 21 00:36 EDT 2022. Contains 353886 sequences. (Running on oeis4.)