A203273 Number of nX4 0..5 arrays with every nonzero element less than or equal to some NW, E or S neighbor

1, 12783, 7849844, 2590250609, 805342647391, 273475278673606, 94164551870236956, 31840186365984384473, 10732714375394439304495, 3631600847251315774005507, 1229751760436754809100391393

Offset

1,2

Comments

Column 4 of A203277

Links

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

Example

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

Crossrefs

Sequence in context: A235720 A187600 A187597 * A217184 A184784 A184780

Adjacent sequences: A203270 A203271 A203272 * A203274 A203275 A203276

Keyword

nonn

Author

R. H. Hardin Dec 31 2011

Status

approved