A201230 Number of nX3 0..3 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.
7, 34, 114, 140, 2462, 18056, 62133, 82861, 1593643, 11978376, 41385355, 54794307, 1094405924, 8362468865, 28876780544, 37796133889, 761894988558, 5848452096002, 20148759500753, 26152640971116, 532945521296121
Offset: 1
Keywords
Examples
Some solutions for n=8 ..0..0..0....0..1..1....0..0..1....0..0..0....0..1..1....0..0..1....0..0..0 ..0..1..1....0..2..1....0..0..1....0..0..1....0..1..1....0..2..1....0..0..1 ..0..1..1....0..2..1....0..1..2....0..1..2....0..1..2....0..1..3....0..1..2 ..0..1..2....0..2..1....0..3..3....1..1..3....0..3..3....0..1..2....1..3..2 ..1..3..3....0..3..2....1..1..2....2..3..3....0..3..2....0..3..2....1..2..3 ..2..2..2....0..3..2....2..2..3....1..2..2....0..2..3....1..3..2....1..2..3 ..2..3..3....3..3..3....1..2..2....1..2..2....1..3..2....2..3..3....1..3..3 ..2..3..3....1..3..2....3..3..3....3..3..3....2..2..3....1..3..2....2..2..3
Links
- R. H. Hardin, Table of n, a(n) for n = 1..36
Comments