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A239811
Number of n 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, modulo 4
0
2, 23, 1480, 510748, 884977259, 8243207656791, 399696014140196630, 102140919909434198721245, 136329092264192919129397551406
OFFSET
1,1
COMMENTS
Diagonal of A239819
EXAMPLE
Some solutions for n=3
..3..2..2....3..2..0....3..0..0....3..2..2....2..3..3....3..2..0....2..3..3
..3..0..1....2..1..0....1..0..2....3..2..2....2..1..1....2..0..0....2..3..3
..2..0..1....3..1..3....2..0..1....1..2..0....2..3..2....1..2..2....3..2..0
CROSSREFS
Sequence in context: A266992 A079480 A239398 * A082963 A083759 A240563
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 27 2014
STATUS
approved