A203337 Number of nX7 0..5 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors

1, 35483, 327579980, 1066362412766, 3356615719680977, 12521002071185162318

Offset

1,2

Comments

Column 7 of A203338

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A300762 A250978 A282129 * A184002 A205741 A206673

Adjacent sequences: A203334 A203335 A203336 * A203338 A203339 A203340

Keyword

nonn

Author

R. H. Hardin Dec 31 2011

Status

approved