A214378 Number of nXnXn triangular 0..2 arrays with no element lying outside the (possibly reversed) range delimited by its sw and se neighbors, and no element equal to its horizontal neighbors.
3, 14, 94, 890, 11700, 211760, 5247716, 177440488, 8167458184, 510966924026, 43400537295428, 5000954304735070, 781294621661114882, 165421229889151981502, 47449951234009109621650
Offset: 1
Keywords
Examples
Some solutions for n=3 ....1......1......0......0......1......1......2......2......0......1......1 ...2.1....0.2....0.1....1.0....1.0....1.0....2.1....2.1....0.2....2.1....2.0 ..2.0.2..0.1.2..1.0.1..0.2.0..1.0.2..0.1.0..2.1.2..0.2.1..0.2.1..0.2.1..0.2.0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..18
Comments