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A202711 Number of n X n 0..1 arrays with row sums equal and no column sum equal to the previous 0
2, 2, 38, 838, 75302, 27842760, 37121438930, 192513188823366 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A202714

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=5

..0..1..0..1..1....1..1..0..1..0....1..0..1..0..0....1..0..1..0..0

..1..1..0..1..0....1..1..0..1..0....0..1..0..1..0....0..1..0..0..1

..0..0..1..1..1....1..1..0..0..1....1..0..1..0..0....0..1..0..0..1

..1..0..1..0..1....0..1..1..0..1....0..1..1..0..0....0..1..1..0..0

..1..0..1..1..0....1..1..0..0..1....1..0..0..1..0....0..0..0..1..1

CROSSREFS

Sequence in context: A059523 A038623 A001121 * A222668 A210246 A116567

Adjacent sequences: A202708 A202709 A202710 * A202712 A202713 A202714

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 23 2011

STATUS

approved

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Last modified February 7 02:34 EST 2023. Contains 360111 sequences. (Running on oeis4.)