A218181 T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal and vertical neighbors in a random 0..3 nXk array.
4, 4, 4, 16, 28, 16, 36, 192, 192, 36, 94, 956, 2936, 956, 94, 236, 5494, 33152, 33152, 5494, 236, 602, 30888, 434210, 851332, 434210, 30888, 602, 1528, 172038, 5528352, 25006046, 25006046, 5528352, 172038, 1528, 3882, 964828, 70125438, 710907184
Offset: 1
Examples
Some solutions for n=3 k=4 ..1..1..1..3....1..1..1..3....0..0..0..0....0..0..0..0....2..1..0..0 ..3..1..1..1....1..0..1..3....1..0..0..0....2..0..0..0....2..0..0..0 ..3..2..1..1....0..0..0..3....3..3..3..0....2..3..1..3....3..0..0..0
Links
- R. H. Hardin, Table of n, a(n) for n = 1..84
Crossrefs
Column 1 is A218051
Comments