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A203450
Number of (n+1)X7 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
256, 786, 13777, 265581, 5972476, 125140148, 2396938985, 41222650083, 637232759390, 8897124488034, 112983830198944, 1314391834428984, 14104514485212071, 140489745680450603, 1306284213152732426
OFFSET
1,1
COMMENTS
Column 6 of A203452
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..0..0..0..0....0..0..0..0..0..0..1....0..0..0..0..0..1..1
..0..0..0..1..1..1..1....0..0..0..0..1..1..1....0..0..0..1..1..1..1
..0..0..1..0..0..0..0....0..0..0..1..0..1..0....0..0..1..0..1..0..1
..1..1..1..0..0..0..0....0..0..1..0..1..1..0....0..1..1..0..1..1..1
CROSSREFS
Sequence in context: A045057 A195091 A361176 * A188248 A253822 A258733
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 02 2012
STATUS
approved