Can you find the last number in series? 5 8 17 47 242 ?

1967 The next number in the series is based on formula Next = (1st Number)^2 - (2nd number) 5^2 - 8 = 17 8^2 - 17 = 47 17^2 - 47 = 242 47^2 - 242 = 1967.