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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
1
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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 20 2014
STATUS
approved