A219592 Number of nX5 arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 nX5 array.
15, 55, 550, 4152, 26006, 164075, 1093496, 7362866, 47724022, 292277921, 1695340197, 9384561666, 49848123324, 254860709784, 1257031665966, 5994561288262, 27703365847356, 124331694874481, 542842646444008
Offset: 1
Keywords
Examples
Some solutions for n=3 ..1..1..0..0..0....2..0..0..0..0....1..0..0..0..0....1..1..1..1..0 ..1..1..0..0..0....2..1..0..0..0....1..1..0..0..0....1..1..1..0..0 ..1..1..1..0..0....2..2..1..1..0....2..1..2..2..1....2..1..0..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..25
Comments