At the family dinner in "Ardis the Second" Marina (in VN's novel Ada, 1969, Van's, Ada's and Lucette's mother) asks Demon (Van's and Ada's father) if his room number at the hotel is not 222 by any chance:
‘I had hoped you’d sleep here,’ said Marina (not really caring one way or another). ‘What is your room number at the hotel — not 222 by any chance?’