A223884 Number of nX4 0..2 arrays with row sums unimodal and column sums inverted unimodal

46, 3298, 187019, 8872648, 367614623, 13705619321, 469700382368, 15028355082420, 454196578645090, 13083963708689100, 361818451966460877, 9660123785787286044, 250171942122628486761, 6308537121431695167897

Offset

1,1

Comments

Column 4 of A223885

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

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

Crossrefs

Sequence in context: A123830 A201234 A025763 * A223891 A243648 A302114

Adjacent sequences: A223881 A223882 A223883 * A223885 A223886 A223887

Keyword

nonn

Author

R. H. Hardin Mar 28 2013

Status

approved