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A202575
Number of n X n 0..3 arrays with the row and column sums nondecreasing
0
4, 90, 15688, 27871870, 550113111784
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OFFSET
1,1
COMMENTS
Diagonal of A202581
LINKS
Table of n, a(n) for n=1..5.
EXAMPLE
Some solutions for n=3
..0..1..0....1..0..1....0..1..2....0..1..2....0..1..1....0..2..1....1..1..0
..1..0..3....0..1..3....0..3..0....0..2..2....2..0..2....1..1..2....2..0..1
..2..3..1....3..3..0....1..0..2....2..0..3....1..2..3....0..3..3....0..2..3
CROSSREFS
Sequence in context: A339987 A202918 A146506 * A201721 A374158 A195559
Adjacent sequences: A202572 A202573 A202574 * A202576 A202577 A202578
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 21 2011
STATUS
approved

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Last modified November 6 19:33 EST 2024. Contains 377522 sequences.
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