The roulette wheel, decoded
European sequence (single zero)
0 32 15 19 4 21 2 25 17 34 6 27 13 36 11 30 8 23 10 5 24 16 33 1 20 14 31 9 22 18 29 7 28 12 35 3 26
Rules hiding in the order: colors alternate perfectly around the rim; neighbours of every number differ wildly in value (32 sits next to 0 and 15), so no arc is “rich” or “poor”; low numbers (1–18) and high (19–36) interleave. This is deliberate 18th-century balance engineering — it defeats “sector feels lucky” intuitions by construction.
American sequence (0 and 00)
0 28 9 26 30 11 7 20 32 17 5 22 34 15 3 24 36 13 1 00 27 10 25 29 12 8 19 31 18 6 21 33 16 4 23 35 14 2
The zeros sit opposite each other, and the whole sequence differs from the European — pairs of consecutive numbers face each other across the wheel (1 faces 2, 3 faces 4…). Same balancing goal, different solution, one extra pocket — and that pocket is the entire reason the American game costs 5.26% instead of 2.70%: the math is on EU vs US.
How many numbers, which colors
37 or 38 pockets: 18 red, 18 black, one or two green zeros. Red and black split 1–36 exactly in half, but not alternating by value — the color of each number is fixed by tradition (10 and 28 are black neighbours on the US wheel; see the strips above). Green exists so the house gets paid: every outside bet loses when green lands — unless you’re on French rules (la partage math here).
Wheel vs table: two different maps
The betting layout arranges 1–36 in three neat columns — nothing like the wheel order. That’s why “neighbour” bets (voisins, tiers, orphelins) exist: they’re the only way to bet on physical wheel sectors from the grid. Spin sectors live on the rim; the felt is just an order form.
And the perennial “which pocket is luckiest” question has a data answer: 3.7 million spins vs the folklore.
Spin the real sequence in the simulator →