1.1 Type "Fibonacci sequence calculator"
1.2 Set x = 0.
1.3 Set y = 1.
1.4 Type "Enter number of terms: "
1.5 Demand n.
1.6 For i = 1(1)n, do part 2.
2.1 Type x
2.2 Set z = x + y.
2.3 Set x = y.
2.4 Set y = z.