A218521 - OEIS

%I #8 Oct 03 2025 17:41:46

%S 602,242438,100029148,38497164700,15254005086276,5977895789290552,

%T 2345237392530015812,920135128267216305816,361061212834288178529464,

%U 141687156380002483076174644,55601697647561060078651796422

%N Number of nX7 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..3 nX7 array.

%C Column 7 of A218522

%H R. H. Hardin, <a href="/A218521/b218521.txt">Table of n, a(n) for n = 1..53</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 31 2012