user: Question: Which attendance number was taken in a week less than 16 when the Washington Redskins were the opponents?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 12, 2004', 'at Chicago Bears', 'W 20-16', '61,535']
SQL:

assistant: SELECT "Attendance" FROM "Table" WHERE "Week" < 16.0 AND "Opponent" = 'Washington Redskins';