Abstract: This article presents a review on Jacobsthal and Jacobsthal-Lucas numbers. Some basic properties of Jacobsthal numbers and Jacobsthal-Lucas numbers are given in this article. Except , all and are odd integers. The relations between Jacbsthal and Jacobsthal- Lucas numbers are mentioned in this article. These numbers can be represented by matrices. Fibonacci numbers can be expressed in terms of Jacobsthal numbers and vice versa. Also the identities satisfied by Jacobsthal numbers are discussed in this article.
Key words: Jacobsthal numbers, Jacobsthal- Lucas numbers, Fibonacci numbers, Pell numbers, Pell-Lucas numbers..
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