Comments by "Henning Bartels" (@henningbartels6245) on "Numberphile"
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I doubt a bit that British streets have numbers 3,5,7,9 going in one direction and 46,48,50 in the opposite direction. That sounds odd. In Germany in old cities you will find streets with numbers 1,2,3,4,5 .... counting every house on one side of the street in one direction until the end of the street (lets say 50) and then counting back on the other side of the street 51,52,53,...
With Napoleon and the French occupation they changed the system (with is still standard today). On the left side of the street you will find the uneven numbers 1,3,5, 9 and on the right side the even numbers 2,4,6,8 - but always counting in the same direction (away from city centre or the main street).
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