Some supercongruences modulo $p^2$

Details Some supercongruences modulo $p^2$ Some supercongruences modulo $p^2$

2011-01-05

arxiv.org/abs/1101.1050v1

Mathematics

Number Theory

14 pages

Scientific paper

Let $p>3$ be a prime, and let $m$ be an integer with $p\nmid m$. In the paper we prove some supercongruences concerning $$\align &\sum_{k=0}^{p-1}\frac{\binom{2k}k\binom{3k}k}{54^k},\ \sum_{k=0}^{p-1}\frac{\binom{2k}k\binom{4k}{2k}}{128^k},\ \sum_{k=0}^{p-1}\frac{\binom{3k}k\binom{6k}{3k}}{432^k}, &\sum_{k=0}^{p-1}\frac{\binom{2k}k^2\binom{3k}{k}}{m^k}, \sum_{k=0}^{p-1}\frac{\binom{2k}k^2\binom{4k}{2k}}{m^k},\ \sum_{k=0}^{p-1}\f{\binom{2k}k\binom{3k}{k}\binom{6k}{3k}}{m^k}\mod {p^2}.\endalign$$ Thus we solve some conjectures of Zhi-Wei Sun and the author.

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