Ten is called a triangular number for this reason. Three bowling pins, seen from above, arranged in a small triangle formation on a yellow background. Smaller triangular numbers are also visible: The ...

Constrained sequences find applications in communication, magnetic recording, and biology. In this paper, we restrict our attention to the so-called (d, k) constrained binary sequences in which any ...

Their work revives long-standing mathematical curiosities but does so through a fresh window – additive combinatorics.