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A240244
Number of n X n 0..3 arrays with no element equal to the sum of elements to its left or the sum of the elements above it or the sum of the elements diagonally to its northwest or the sum of the elements antidiagonally to its northeast, modulo 4
0
3, 0, 16, 536, 17476, 2043488, 326181996
OFFSET
1,1
COMMENTS
Diagonal of A240250
EXAMPLE
Some solutions for n=4
..2..1..1..1....2..3..3..3....3..1..3..2....3..1..1..2....2..3..3..3
..3..0..2..2....1..0..0..2....2..0..0..1....2..0..3..3....1..0..2..1
..2..0..1..2....2..0..1..2....2..3..0..2....3..0..1..2....1..2..0..2
..2..0..1..2....2..0..3..2....2..3..0..2....3..2..0..2....2..0..0..3
CROSSREFS
Sequence in context: A038122 A359862 A143779 * A036968 A226158 A024040
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 03 2014
STATUS
approved