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A196016 Number of nX7 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself 1
1, 9, 32, 231, 835, 3572, 22711, 100094, 517009, 2740712, 14291156, 72486659, 375604408, 1948549100, 10070403094, 52010772351, 269069912146, 1391421035119, 7193724490586, 37198028475134, 192356730926735, 994618459574872 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A196017

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..226

EXAMPLE

Some solutions for n=4

..2..3..3..3..3..2..2....2..2..3..3..2..3..2....2..3..3..3..3..3..2

..3..3..4..4..3..0..2....2..0..2..3..0..2..3....3..3..4..4..4..3..3

..2..0..3..4..4..3..3....3..2..0..3..2..0..2....2..0..3..3..3..0..2

..2..2..3..3..3..3..2....2..3..2..3..3..2..2....2..2..2..0..2..2..2

CROSSREFS

Sequence in context: A229444 A300773 A317279 * A183426 A061913 A264512

Adjacent sequences:  A196013 A196014 A196015 * A196017 A196018 A196019

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 26 2011

STATUS

approved

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Last modified August 14 13:46 EDT 2020. Contains 336481 sequences. (Running on oeis4.)