A183490 Number of nX7 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors

73, 38272, 397689, 22721738, 3384231070, 91098582570

Offset

1,1

Comments

Column 7 of A183492

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 3X7
..0..0..0..0..0..0..0....0..0..0..0..0..1..1....0..0..0..0..0..0..3
..2..1..1..2..3..3..3....2..2..0..2..0..2..2....2..0..3..1..1..0..3
..2..1..1..2..3..3..3....0..0..0..2..0..1..1....2..0..3..1..1..0..0

Crossrefs

Sequence in context: A232293 A351800 A232366 * A232307 A232457 A262662

Adjacent sequences: A183487 A183488 A183489 * A183491 A183492 A183493

Keyword

nonn

Author

R. H. Hardin Jan 05 2011

Status

approved