A204334 Number of (n+1)X4 0..7 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

296860, 28167739, 1641649698, 68380482851, 2112336887047, 52148478516988, 1056518851863222, 18214385897286379, 272369535865540934, 3605626582401347706, 42838162300239816905, 462748031670197579287

Offset

1,1

Comments

Column 3 of A204339

Links

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

Example

Some solutions for n=4
..5..1..7..4....2..5..6..4....1..0..5..4....0..3..5..6....2..4..6..6
..0..6..4..7....5..6..5..7....5..6..4..5....7..4..5..6....7..5..5..7
..2..4..6..7....5..6..7..6....6..5..7..6....4..7..6..6....5..7..7..7
..0..6..7..7....4..7..6..7....4..7..6..7....5..6..7..7....6..7..7..7
..0..6..7..7....5..6..7..6....7..6..7..6....6..6..7..7....6..7..7..7

Crossrefs

Sequence in context: A251387 A164946 A204318 * A048906 A251334 A119740

Adjacent sequences: A204331 A204332 A204333 * A204335 A204336 A204337

Keyword

nonn

Author

R. H. Hardin Jan 14 2012

Status

approved