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arxiv: 0912.1280 · v5 · submitted 2009-12-07 · 🧮 math.NT · math.CO

Congruences involving binomial coefficients and Lucas sequences

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keywords binomialcoefficientscongruencesinvolvinglucassequencesaccordingbinom
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In this paper we obtain some congruences involving central binomial coefficients and Lucas sequences. For example, we show that if p>5 is a prime then $\sum_{k=0}^{p-1}F_k*binom(2k,k)/12^k$ is congruent to 0,1,-1 modulo p according as p=1,4 (mod 5), p=13,17 (mod 30), and p=7,23 (mod 30) respectively, where {F_n} is the Fibonacci sequence. We also raise several conjectures.

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