  Wall published a paper in 1960 on the Fibonacci sequence where he derived
many results concerning the period and prime power divisibility modulo m. His
periodicity results have been generalized to second order linear recurrences.
Here we study the sequences generated by such recurrences, with starting values
of {0,1}: among other things, we derive new prime power divisibility results,
derive the period by new methods, establish new identities, show derivations
involving powers of matrices generated by these general recurrences, etc.
