The Diophantine Frobenius Problem

During the early part of the last century, Ferdinand Georg Frobenius (1849-1917) raised the following problem, known as the Frobenius Problem (FP): given relatively prime positive integers a1, an, find the largest natural number (called the Frobenius number and denoted by g(a1, an) that is not representable as a nonnegative integer combination of a1, an. At first glance FB may look deceptively specialized.