  Simple and efficient algorithm based on heuristic search by shotgun hill
climbing to construct binary sequences with small peak sidelobe levels (PSL) is
suggested. The algorithm is applied for generation of binary sequences of
lengths between 106 and 300. Improvements are obtained in almost half of the
considered lengths while for the rest of the lengths, binary sequences with the
same PSL values as reported in the state-of-the-art publications are found.
