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A239857 Number of nX7 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 0
20, 100, 1382, 9963, 77212, 937154, 9885999, 147826427, 2030390429, 28426183961 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A239858
LINKS
EXAMPLE
Some solutions for n=4
..3..2..2..2..3..2..3....3..2..3..2..3..2..2....2..3..3..3..2..3..2
..2..1..0..1..2..1..0....2..1..0..1..2..1..0....3..1..2..1..1..2..3
..3..1..3..0..2..2..2....3..2..2..2..2..2..3....2..3..3..3..2..2..2
..3..2..3..2..0..0..0....3..2..2..0..0..2..2....2..1..2..0..0..2..2
CROSSREFS
Sequence in context: A027986 A240437 A174078 * A041772 A043462 A044271
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 28 2014
STATUS
approved

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Last modified February 24 11:15 EST 2024. Contains 370303 sequences. (Running on oeis4.)