A203867 Number of (n+1)X6 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

280509, 10500903, 269967062, 4868641840, 66135356129, 721851243868, 6583402402582, 51842308069669, 360087670399010, 2246509788513939, 12752564863065714, 66609985398909168, 322906800607902925

Offset

1,1

Comments

Column 5 of A203870

Links

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

Example

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

Crossrefs

Sequence in context: A111750 A145873 A253033 * A250979 A257151 A257158

Adjacent sequences: A203864 A203865 A203866 * A203868 A203869 A203870

Keyword

nonn

Author

R. H. Hardin Jan 07 2012

Status

approved