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MATHEMATICA BOHEMICA, Vol. 133, No. 4, pp. 377-387 (2008)
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Tribonacci modulo $2^t$ and $11^{t}$

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Jiri Klaska

* Jiri Klaska*, Department of Mathematics, Brno University of Technology, Technicka 2, 616 69 Brno, Czech Republic, e-mail: ` klaska@fme.vutbr.cz`

**Abstract:** Our previous research was devoted to the problem of determining the primitive periods of the sequences $(G_n\mod p^t)_{n=1}^{\infty}$ where $(G_n)_{n=1}^{\infty}$ is a Tribonacci sequence defined by an arbitrary triple of integers. The solution to this problem was found for the case of powers of an arbitrary prime $p\ne2,11$. In this paper, which could be seen as a completion of our preceding investigation, we find solution for the case of singular primes $p=2,11$.

**Keywords:** Tribonacci, modular periodicity, periodic sequence

**Classification (MSC2000):** 11B50, 11B39

**Full text of the article:**

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