|
%I #8 Apr 25 2023 15:29:07
%S 8,720,58700,4984812,433687328,38397901048,3437301520640,
%T 309729304158392,28014137861507600,2539060159927062472,
%U 230384024072002424484,20916257751298954797560,1899514293467279631162576
%N Number of n X 5 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, with no occupancy greater than 2.
%C Column 5 of A221200.
%H R. H. Hardin, <a href="/A221198/b221198.txt">Table of n, a(n) for n = 1..15</a>
%e Some solutions for n=3
%e ..1..1..0..1..0....0..0..0..2..1....0..2..2..1..1....1..1..1..2..1
%e ..0..2..2..2..0....0..2..2..2..1....1..2..1..1..0....0..2..1..0..0
%e ..1..1..1..2..1....0..1..2..2..0....0..2..0..1..1....1..2..0..2..1
%Y Cf. A221200.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 04 2013
| 