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A241358
Number of 3 X n 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 one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.
1
4, 3, 19, 51, 61, 230, 641, 960, 3746, 9339, 16659, 60981, 137870, 288484, 962239, 2106198, 4825844, 14944563, 32681302, 79714689, 232184355, 513198469, 1304385350, 3611732771, 8129991862, 21132067461, 56282787035, 129448737499
OFFSET
1,1
COMMENTS
Row 3 of A241356.
LINKS
EXAMPLE
Some solutions for n=4
..3..2..3..3....3..2..3..3....2..3..2..2....3..2..3..3....3..2..3..3
..3..1..1..3....3..1..1..2....2..1..1..2....3..1..2..1....3..1..1..3
..2..3..0..2....2..3..3..1....2..0..1..2....2..3..3..2....2..1..0..1
CROSSREFS
Cf. A241356.
Sequence in context: A161893 A192773 A183231 * A178417 A178628 A345125
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 20 2014
STATUS
approved