A223874 Number of nX6 0..3 arrays with rows, diagonals and antidiagonals unimodal.
610, 372100, 90648289, 13394424591, 1705349067795, 222723966999899, 31033209360480497, 4506383006996850479, 664129167006783939721, 98073753144458822374289, 14467688866723338479395847
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..0..0..1..1..0....0..0..0..3..2..1....0..0..0..0..2..2....0..0..0..0..3..3 ..0..0..0..1..2..3....0..0..0..1..3..3....0..0..0..0..2..3....0..0..0..1..3..2 ..0..0..0..2..2..2....0..0..0..0..3..1....0..0..0..1..1..0....0..0..0..2..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..81
Comments