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A203451 Number of (n+1)X8 0..1 arrays with column and row pair sums b(i,j)=a(i,j)+a(i,j-1) and c(i,j)=a(i,j)+a(i-1,j) such that rows of b(i,j) and columns of c(i,j) are lexicographically nondecreasing 1
512, 1624, 42112, 1371532, 58336803, 2396938985, 91479447926, 3140066953229, 96597454311425, 2670704330646619, 66787322753262716, 1521429379945770028, 31792318842649436230, 613337883329825690251, 10987780969990080992081 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A203452

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A220583 A195092 A235192 * A251192 A251187 A223333

Adjacent sequences:  A203448 A203449 A203450 * A203452 A203453 A203454

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 02 2012

STATUS

approved

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Last modified August 11 10:15 EDT 2022. Contains 356065 sequences. (Running on oeis4.)