cp's OEIS Frontend

A162764 Minimal total number of floors that an elevator must move to get n persons waiting, respectively, on floors i = 1, 2, ..., n, to their destination floors n-i+1 (= n, n-1, ..., 1), if the elevator can hold up to C = 4 persons at a time and starts at floor 1, and no passenger may get off the elevator before reaching his destination.