A278020 Number of 7Xn 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 48510, 35217368, 33064544648, 30622716754158, 28318244060569024, 26189441962786135952, 24220244091289286969102, 22398930025770598869206272, 20714553726314324138411735648, 19156837196453052929812096448268

Offset

1,2

Comments

Row 7 of A278014.

Links

R. H. Hardin, Table of n, a(n) for n = 1..43

Example

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

Crossrefs

Cf. A278014.

Sequence in context: A083627 A031650 A223935 * A237105 A234230 A251597

Adjacent sequences: A278017 A278018 A278019 * A278021 A278022 A278023

Keyword

nonn

Author

R. H. Hardin, Nov 08 2016

Status

approved