second coefficient

In essence, this sum runs over all cycles of length 2 in the de Bruijn diagram. The solution to the requirements by = xi and ax=yj is ; however this notation must be understood to designate only as much of the sequence as is needed. Thus could represent 0, 01, 010, 0101, and so on, but not 101, for example.



Harold V. McIntosh
E-mail:mcintosh@servidor.unam.mx