A203868 Number of (n+1)X7 0..4 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) nondecreasing in column and row directions, respectively.

1322098, 59962757, 1959924899, 43601076951, 721851243868, 9455280188061, 102773744858440, 955896356158916, 7795605797284447, 56686366577585168, 372732873405007189, 2239600836358560809, 12409329923078206156

Offset

1,1

Comments

Column 6 of A203870

Links

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

Example

Some solutions for n=4
..4..3..3..3..3..3..3....0..0..0..3..2..1..3....0..2..2..4..4..4..4
..3..4..4..4..4..4..4....0..0..2..2..3..4..3....0..2..3..4..4..4..4
..4..4..4..4..4..4..4....1..2..1..3..4..3..4....4..2..3..4..4..4..4
..4..4..4..4..4..4..4....1..2..3..4..3..4..4....2..4..4..4..4..4..4
..4..4..4..4..4..4..4....3..2..4..3..4..4..4....3..4..4..4..4..4..4

Crossrefs

Sequence in context: A234710 A116495 A179584 * A204969 A237107 A206620

Adjacent sequences: A203865 A203866 A203867 * A203869 A203870 A203871

Keyword

nonn

Author

R. H. Hardin, Jan 07 2012

Status

approved