I live in an Edwardian street and my house should have been 13 except it isn’t. They skipped it and my house is 15 instead. Hopefully the universe doesn’t spot this deceit!
The odds and evens are usually also allocated sequentially and independently, so it can be incredibly annoying when you're looking at the numbers on the wrong side of the road thinking you're getting close when you're actually walking away from the house because the numbers are much higher or lower on the other side.