A250436 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing sum of every two consecutive values in every row and column

81, 2160, 160000, 8750000, 937890625, 74118870000, 9682651996416, 958582547645184, 141763707879526656, 16346105372357849088, 2632478657451209588736, 338880211548064890612480

Offset

1,1

Comments

Diagonal of A250443

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Sequence in context: A296577 A237316 A237722 * A237545 A253399 A236820

Adjacent sequences: A250433 A250434 A250435 * A250437 A250438 A250439

Keyword

nonn

Author

R. H. Hardin, Nov 22 2014

Status

approved