Even though I’ve been staring at these numbers and relationships since 2018, I only tumbled onto this sequence this week. Those Egyptians loved mixing their units of length into irrationals.

The sequence is this, it’s a set of ratios:

F : ₢ :: 1 : é :: ℳ : φ² :: ₷ : π.

where

F = foot 0.3047 m (probable original length, not 0.3048 as declared now)

₢ = royal cubit 0.5236 m

1 = 1 metre

é = e – 1 = 1.71828…

ℳ = 1 + ₢ = 1.5236 ( == 5 feet)

φ² = golden ratio squared

₷ = six feet = metre + cubit + foot

π = pi.