A196016 Number of nX7 0..4 arrays with each element equal to the number its horizontal and vertical neighbors within one of itself

1, 9, 32, 231, 835, 3572, 22711, 100094, 517009, 2740712, 14291156, 72486659, 375604408, 1948549100, 10070403094, 52010772351, 269069912146, 1391421035119, 7193724490586, 37198028475134, 192356730926735, 994618459574872

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