CREATE TABLE table_203_730 (id DECIMAL, "week" DECIMAL, "date" TEXT, "opponent" TEXT, "result" TEXT, "attendance" DECIMAL, "bye" TEXT)

which week had the least amount of people in attendance ?
SELECT "week" FROM table_203_730 ORDER BY "attendance" LIMIT 1
SELECT "week" FROM "table_203_730" ORDER BY "attendance" NULLS FIRST LIMIT 1