A265933 Number of 5Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.
3125, 851496, 1671744, 4044156, 8821464, 22093736, 53801792, 150157540, 449755384, 1236102500, 3412322472, 9360675328, 28319517672, 77705043076, 219811992824, 603529357560, 1803987081984, 4979509778764, 14264973899296
Offset: 1
Keywords
Examples
Some solutions for n=1 ..1....3....3....3....4....3....0....2....0....2....0....1....3....3....2....1 ..1....2....2....2....1....1....0....2....1....3....2....3....0....2....2....4 ..0....1....4....1....3....1....0....0....3....2....3....2....4....1....1....1 ..3....1....2....4....4....2....2....2....0....3....2....2....0....4....1....1 ..0....3....1....2....3....0....0....3....0....2....3....4....4....4....3....2
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Crossrefs
Cf. A265928.
Comments