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A202631
Number of n X n 0..3 arrays with adjacent row and column sums unequal
1
4, 184, 143028, 1960824272, 443471777729100
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OFFSET
1,1
COMMENTS
Diagonal of A202636
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
Some solutions for n=3
..2..0..3....0..1..0....0..1..0....2..3..2....2..0..0....0..2..3....3..2..1
..1..0..3....1..3..1....2..0..0....3..0..2....3..2..3....2..2..2....2..2..3
..0..2..0....2..0..0....2..2..2....3..2..2....2..2..0....0..0..2....1..0..1
CROSSREFS
Sequence in context: A174772 A146549 A156905 * A357023 A102194 A102191
Adjacent sequences: A202628 A202629 A202630 * A202632 A202633 A202634
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 21 2011
STATUS
approved

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Last modified October 5 04:48 EDT 2024. Contains 376530 sequences.
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