CREATE TABLE table_3941 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" FLOAT, "U.S. viewers  ( millions ) " CLOB)

how many episodes in the series had as a production code 16016?
SELECT COUNT("No. in series") FROM table_3941 WHERE "Production code" = '16016'
SELECT COUNT("No. in series") FROM "table_3941" WHERE "Production code" = '16016'