A241399 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4

4, 13, 29, 85, 201, 689, 1929, 4068, 11963, 33651, 80035, 231111, 606571, 1542322, 4407947, 11308092, 29789742, 82990169, 213582987, 572318731, 1556503937, 4056412623, 10923983311, 29272912317, 77140259839, 207516834784

Offset

1,1

Comments

Row 3 of A241397

Links

R. H. Hardin, Table of n, a(n) for n = 1..143

Example

Some solutions for n=4
..2..3..2..2....3..2..2..2....3..2..3..3....2..3..3..2....2..3..3..3
..2..1..2..0....1..0..0..0....1..2..1..2....2..1..2..2....2..3..2..2
..3..0..0..0....2..0..0..0....3..2..0..0....2..0..0..0....2..1..0..0

Crossrefs

Sequence in context: A301886 A015634 A266891 * A264536 A161742 A041301

Adjacent sequences: A241396 A241397 A241398 * A241400 A241401 A241402

Keyword

nonn

Author

R. H. Hardin, Apr 20 2014

Status

approved