Abstract
We prove some 3-adic congruences for binomial sums, which were conjectured by Zhi-Wei Sun. For example, for any integer m ≡ 1 (mod 3) and any positive integer n, we have
where ν 3(n) denotes the 3-adic order of n. In our proofs, we use several auxiliary combinatorial identities and a series converging to 0 over the 3-adic field.
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Zhang, Y., Pan, H. Some 3-adic congruences for binomial sums. Sci. China Math. 57, 711–718 (2014). https://doi.org/10.1007/s11425-013-4723-9
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DOI: https://doi.org/10.1007/s11425-013-4723-9