Table schema:
CREATE TABLE table_name_55 (fa_cup_goals INTEGER, total_goals VARCHAR, fa_cup_apps VARCHAR, total_apps VARCHAR)

Question: What is the smallest number of FA Cup Goals for players with 4 FA Cup Appearances, 49 Total Appearances, and more than 17 total goals?
SQL: SELECT MIN(fa_cup_goals) FROM table_name_55 WHERE fa_cup_apps = "4" AND total_apps = "49" AND total_goals > 17