A224177 Number of 6Xn 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing

84, 7056, 282372, 6425876, 95808564, 1038484760, 8857798353, 63080505999, 391482575333, 2182020084219, 11154302333669, 53070835890575, 237508827855216, 1007614860280386, 4076458517196412, 15801076345180104

Offset

1,1

Comments

Row 6 of A224173

Links

R. H. Hardin, Table of n, a(n) for n = 1..39

Example

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

Crossrefs

Sequence in context: A132052 A273438 A097840 * A223869 A224389 A223991

Adjacent sequences: A224174 A224175 A224176 * A224178 A224179 A224180

Keyword

nonn

Author

R. H. Hardin Mar 31 2013

Status

approved