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A202648
Number of n X n 0..1 arrays with no row or column sum equal to the previous
1
2, 8, 126, 10016, 3648810, 5616280768, 35610018145138
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 1 of A202651
LINKS
Table of n, a(n) for n=1..7.
EXAMPLE
Some solutions for n=3
..1..0..1....0..0..0....1..1..0....0..1..0....0..0..1....0..1..0....0..1..1
..0..0..0....1..0..1....0..1..0....0..1..1....0..1..1....0..1..1....0..1..0
..1..0..1....1..0..0....0..0..0....0..1..0....0..0..1....1..1..1....1..1..0
CROSSREFS
Sequence in context: A358152 A271846 A009360 * A193481 A156497 A064205
Adjacent sequences: A202645 A202646 A202647 * A202649 A202650 A202651
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 22 2011
STATUS
approved

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Last modified September 28 15:06 EDT 2024. Contains 376297 sequences.
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