A212948 Number of 6Xn 0..n-1 arrays with no column j greater than or equal to than column j-1 in all rows.
1, 3367, 320396041, 232665778445031, 764898125476357657001, 8389667096561737605103329223, 250841509251155966625680184691562929, 17704338387777976852462465598115049461004519
Offset: 1
Keywords
Examples
Some solutions for n=4 ..1..3..2..2....2..0..0..0....1..3..2..3....3..2..1..3....3..2..0..2 ..1..1..3..2....0..1..0..1....1..0..0..1....0..3..1..0....3..2..3..3 ..0..1..0..3....3..3..3..2....1..1..1..2....2..1..0..3....2..3..0..0 ..3..1..3..2....3..0..3..0....2..3..0..3....3..3..3..3....1..2..3..2 ..2..1..1..2....2..0..2..2....3..0..0..3....2..1..3..1....2..0..2..1 ..2..0..1..3....3..0..0..0....3..3..2..1....3..0..0..1....0..1..2..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..18
Comments