CREATE TABLE table_14940519_1 (week VARCHAR, game_site VARCHAR, opponent VARCHAR)

Name the number of week for game site being memorial stadium for buffalo bills
SELECT COUNT(week) FROM table_14940519_1 WHERE game_site = "Memorial Stadium" AND opponent = "Buffalo Bills"
SELECT COUNT("week") FROM "table_14940519_1" WHERE "Buffalo Bills" = "opponent" AND "Memorial Stadium" = "game_site"