Generating Seeded Tours in SQL

DECLARE @Rounds INT = 3;

WITH Slots AS (SELECT 1 AS RecursionLevel, 1 AS Num1, 2 AS Num2
                UNION ALL
               SELECT RecursionLevel + 1 AS RecursionLevel, Num1, POWER(2,RecursionLevel+1) + 1 - Num1
                 FROM Slots
                WHERE RecursionLevel < @Rounds
                UNION ALL
               SELECT RecursionLevel + 1 AS RecursionLevel, Num2, POWER(2,RecursionLevel+1) + 1 - Num2
                 FROM Slots
                WHERE RecursionLevel < @Rounds)
SELECT @Rounds + 1 - RecursionLevel AS [Round], Num1, Num2
  FROM Slots
 ORDER BY 1