These be the sons of Leah, which she bare unto Jacob in Padanaram, with his daughter Dinah: all the souls of his sons and his daughters were thirty and three. (Genesis 46:15)
Apparently unmarried since her misfortune in Shechem, and therefore mentioned here as an independent member of Jacob’s family.
Thirty and three.
This number is reached either by excluding Er and Onan and including Jacob and Dinah, as is most likely correct, or by including Er and Onan and excluding Jacob and Dinah. The 6 sons of Leah, 23 grandsons (who were still alive), 2 great-grandsons (sons of Pharez), and 1 daughter, add up to 32 persons, or with Jacob, 33.