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A203963 Number of (n+1)X7 0..2 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
17559, 1512850, 632607409, 307121002440, 136086136646160, 50733485047025530, 16109192511515893766, 4433254841709522719831, 1076635072887512457016009, 234146141872612907753307731, 46148223719533101091238412472 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A203965
LINKS
EXAMPLE
Some solutions for n=4
..0..2..1..1..2..1..1....2..2..2..2..2..2..2....0..2..0..1..2..1..1
..1..1..2..2..1..2..2....2..2..2..2..2..2..2....2..0..2..2..1..2..2
..1..2..1..1..2..1..1....2..2..2..2..2..2..2....0..2..1..0..2..2..2
..2..1..2..2..1..2..2....2..2..2..2..2..2..2....1..1..2..1..1..1..1
..2..2..1..1..2..1..1....2..2..2..2..2..2..2....1..1..2..2..2..2..2
CROSSREFS
Sequence in context: A321640 A083599 A049521 * A253403 A213107 A167190
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2012
STATUS
approved

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Last modified April 17 08:05 EDT 2024. Contains 371756 sequences. (Running on oeis4.)