In mathematics, a Lehmer sequence is a generalization of a Lucas sequence.[1]

Algebraic relations

If a and b are complex numbers with

under the following conditions:

Then, the corresponding Lehmer numbers are:

for n odd, and

for n even.

Their companion numbers are:

for n odd and

for n even.

Recurrence

Lehmer numbers form a linear recurrence relation with

with initial values . Similarly the companion sequence satisfies

with initial values

References

  1. Weisstein, Eric W. "Lehmer Number". mathworld.wolfram.com. Retrieved 2020-08-11.


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