Papaver orientale "Perry's White"

Roughly translated as ... lovely white poppy.

The poppies are starting to come out in the parterre beds. Pleasingly to those of us with a mathematical bent, the plant in the first bed has no flowers (stick with me you'll see why it's pleasing in a bit), the plant in second bed has one flower, the plant in the third bed has two flowers and the plant in the fourth bed has three flowers.

f = n - 1

f = n + 1 would have been even nicer, but so be it.