A291171 -id:A291171 - cp's OEIS frontend

A291162 Sequence of black numbers on the double zero (American) roulette wheel read counterclockwise.

2, 35, 4, 33, 6, 31, 8, 29, 10, 13, 24, 15, 22, 17, 20, 11, 26, 28, 2, 35, 4, 33, 6, 31, 8, 29, 10, 13, 24, 15, 22, 17, 20, 11, 26, 28

Offset: 1

Hugo Pfoertner, Aug 19 2017

The angular spacing on the rotor between the black numbers 10 and 13 is 4*Pi/19 due to the insertion of red 27, double zero and red 1. The spacing of all other black neighbors is 2*Pi/19 due to one inserted red number or the single zero between the black numbers 28 and 2.

Roulettephysics.com, Roulette Wheel Diagram Picture.

Cf. A069892, A069893, A291151, A291152, A291154, A291155, A291156, A291157, A291158, A291159, A291160, A291161, A291171.

A292151 Orphelins (orphans): Numbers in two disjoint sectors of the Roulette wheel addressed by an announced bet in European (French) Roulette.

Original entry on oeis.org

1, 6, 9, 14, 17, 20, 31, 34

Offset: 1

Hugo Pfoertner, Sep 09 2017

The orphelins are the union of 5 numbers (1 - red, 20 - black, 14 - red, 31 - black, 9 -red) in a first sector and of 3 numbers (17 - black, 34 - red, 6 - black) in another sector. The two disjoint sectors separate the "Voisins du Zéro" (neighbors of zero) sector from the "Tiers du Cyclindre" (one third of the wheel) sector.

Wikipedia, Roulette - Orphelins (orphans).
Wikipedia, Traditional roulette wheel sectors.

Cf. A069892, A069893, A291151, A291152, A291154, A291155, A291156, A291157, A291158, A291159, A291160, A291161, A291162, A291171.

cp's OEIS Frontend

A291162 Sequence of black numbers on the double zero (American) roulette wheel read counterclockwise.

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