CREATE TABLE table_4005 ("\\u2116" FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

What is the number in season of the episode whose production code is pabf05?
SELECT "#" FROM table_4005 WHERE "Production code" = 'PABF05'
SELECT "#" FROM "table_4005" WHERE "Production code" = 'PABF05'