Rehan and Huxtable are two characters from the popular television show 'The Cosby Show'. Rehan is the daughter of Cliff and Clair Huxtable, while Huxtable is the family's last name. The answer to the crossword puzzle is ADAS, which stands for 'A Different Approach to Success'. This phrase was coined by Dr. Huxtable, the father of the Huxtable family, to describe his philosophy on parenting and life.