A Trivia Question

[smrgol]

Why does the Royal Mail have all these weird and wonderful values for single stamps?

1 pence
2
5
9
10
20
37
42
44
49
50
72

What is the connection?  (Yes I do have the answer - I'll post it later)

Comments

[sci.livejournal.com]

I know what you mean. If they wanted to have values you could combine to make any possible postage amount, they really aught to produce binary stamps.
1
2
4
8
16
32
64
128..

[smrgol-t-kirin.livejournal.com]

Actually Sci, you're close.

The sequence I have shown is a "Richmoud's sequence". It allows you to make any number you choose, by using no more than three stamps.