A201151 Number of nX4 0..2 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally

19, 140, 860, 4572, 22183, 100362, 432048, 1791740, 7225068, 28510387, 110629661, 423640742, 1605361751, 6032626211, 22517083366, 83589139136, 308933515758, 1137661210293, 4177146453272, 15300167480847, 55930646132694

Offset

1,1

Comments

Column 4 of A201155

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

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

Crossrefs

Sequence in context: A057636 A104046 A060104 * A221600 A110694 A107962

Adjacent sequences: A201148 A201149 A201150 * A201152 A201153 A201154

Keyword

nonn

Author

R. H. Hardin Nov 27 2011

Status

approved