CREATE TABLE table_name_8 (week INT, result VARCHAR, attendance VARCHAR)

Which Week has a Result of l 20 13, and an Attendance larger than 49,598?
SELECT MAX(week) FROM table_name_8 WHERE result = "l 20–13" AND attendance > 49 OFFSET 598
SELECT MAX("week") FROM "table_name_8" WHERE "attendance" > 49 AND "l 20–13" = "result" OFFSET 598