Electronic Journal of Mathematical Analysis and Applications, cilt.5, sa.1, ss.148-154, 2017 (Hakemli Dergi)
We define a set L(n) of vectors with positive integral entries. We
show that the cardinality of L(n) is the nth Lucas number Ln, for n ≥ 1. We
then show that the number l(n) of M-sequences of length n is bounded by the
Lucas number Ln, for n ≥ 1. This is an analog of similar statements with
Fibonacci numbers Fn instead of Lucas numbers.