cp's OEIS Frontend

A232380 Number of 5Xn 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, diagonally or antidiagonally, and no adjacent values equal.

%I A232380 #6 Jul 23 2025 07:22:50
%S A232380 1,934,36574,957232,27133338,825606450,24945468636,747913169216,
%T A232380 22460676406974,675143834470462,20291549259837168,609804313253059260,
%U A232380 18326215546732616794,550758040677362295570,16551923665278410826856
%N A232380 Number of 5Xn 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, diagonally or antidiagonally, and no adjacent values equal.
%C A232380 Row 5 of A232376
%H A232380 R. H. Hardin, <a href="/A232380/b232380.txt">Table of n, a(n) for n = 1..210</a>
%e A232380 Some solutions for n=3
%e A232380 ..2..1..0....1..2..3....1..2..1....2..3..2....0..3..0....0..1..2....0..1..0
%e A232380 ..0..3..2....3..0..3....3..2..3....2..1..2....2..1..0....2..3..2....0..3..2
%e A232380 ..0..1..0....1..0..3....3..0..3....3..0..3....0..3..2....2..1..0....2..3..0
%e A232380 ..0..3..0....1..2..3....1..0..3....1..0..1....0..1..0....2..3..2....2..1..2
%e A232380 ..2..3..2....1..0..1....1..2..3....1..2..3....2..3..0....0..1..2....0..3..2
%K A232380 nonn
%O A232380 1,2
%A A232380 _R. H. Hardin_, Nov 23 2013