Multistability and Formation of Spiral Waves in a Fractional-Order Memristor-Based Hyperchaotic Lü System with No Equilibrium Points

Algorithm 1

The algorithm to find the nodes near node i.

	Input: i, N
	Output: Nodes
	if i = 1
	Nodes = [2, 3, N − 1];
	elseif i = 2
	Nodes = [1, N, 4];
	elseif i = N − 1
	Nodes = [1, N, N − 3];
	elseif i = N
	Nodes = [2, N − 1, N − 2];
	elseif i%2 = 1
	Nodes = [i + 1, i − 2, i + 2];
	else
	Nodes = [i − 1, i − 2, i + 2];
	end if