close
login
Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX7 array.
0

%I #7 Oct 03 2025 18:05:31

%S 84,231,34529,1324860,66665715,2651269670

%N Number of nX7 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX7 array.

%C Column 7 of A219460

%e Some solutions for n=3

%e ..0..0..1..2..2..2..2....0..0..0..2..3..3..3....0..0..0..0..1..1..2

%e ..0..0..1..1..2..2..2....0..0..0..1..2..2..2....0..0..0..0..1..1..1

%e ..0..0..1..1..2..3..3....0..0..0..1..2..2..2....0..0..2..2..3..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 20 2012