A219598 Number of 5Xn 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 5Xn array.
15, 87, 705, 4350, 26006, 156964, 939006, 5466749, 30837420, 168947111, 901097968, 4680202369, 23651533225, 116192356397, 554663937245, 2572846819549, 11600123422679, 50863765123285, 217051630988778, 902189285684499
Offset: 1
Keywords
Examples
Some solutions for n=3 ..0..0..0....1..0..0....1..0..0....0..0..0....0..0..0....0..0..0....1..1..1 ..0..0..0....1..1..0....1..1..0....0..0..0....1..0..0....1..0..0....1..1..0 ..0..0..0....1..0..0....1..1..1....1..0..0....1..2..0....1..1..2....1..0..0 ..0..0..0....2..1..0....1..1..1....1..1..0....2..2..2....1..0..0....1..0..0 ..1..0..1....2..1..1....2..2..1....2..1..1....2..2..2....0..0..0....1..1..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..37
Comments