A202862 - OEIS

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A202862

Number of n X n 0..6 arrays with row and column sums one greater than the previous row and column.

7, 42, 4578, 17232446, 2303711043274

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=3

..0..5..4....2..0..2....1..1..5....5..2..5....3..3..6....1..3..2....4..5..3

..3..5..2....2..2..1....6..1..1....4..5..4....4..5..4....1..3..3....5..3..5

..6..0..5....0..3..3....0..6..3....3..6..5....5..5..4....4..1..3....3..5..6

CROSSREFS

Column 6 of A202864.

Sequence in context: A205340 A304953 A293850 * A229437 A043064 A175159

Adjacent sequences: A202859 A202860 A202861 * A202863 A202864 A202865

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Dec 25 2011

STATUS

approved