

A266017


Number of 7Xn integer arrays with each element equal to the number of horizontal and antidiagonal neighbors equal to itself.


1



1, 1, 102, 44, 483, 1561, 10708, 62684, 145344, 253394, 1663567, 7253158, 20436396, 81005594, 346203546, 1298613540, 4729960051, 18275111422, 70440272974, 267189128408, 1008549687107, 3827029447559, 14623357809480, 55686510400311
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OFFSET

1,3


COMMENTS

Row 7 of A266012.


LINKS

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


EXAMPLE

Some solutions for n=4
..0..1..1..0....0..1..2..2....0..1..2..2....0..1..1..0....0..2..2..1
..0..2..2..1....1..2..2..0....1..2..2..0....0..2..2..0....2..2..1..0
..2..2..1..0....0..1..1..0....0..1..1..0....2..2..1..0....0..2..2..0
..0..2..2..0....0..2..2..0....0..2..2..1....0..1..2..2....2..2..1..0
..2..2..1..1....2..2..1..0....2..2..1..0....0..2..2..0....0..1..2..2
..0..2..2..0....0..1..2..2....0..2..2..1....0..1..2..2....0..2..2..0
..2..2..1..1....0..2..2..0....2..2..1..0....1..2..2..0....0..1..1..0


CROSSREFS

Cf. A266012.
Sequence in context: A325775 A204749 A244949 * A144469 A009101 A031962
Adjacent sequences: A266014 A266015 A266016 * A266018 A266019 A266020


KEYWORD

nonn


AUTHOR

R. H. Hardin, Dec 20 2015


STATUS

approved



