摘要
本文从有限差理论出发，给出了■的求和方面递推公式，定理的证明比前人简捷，并顺便导出贝努里的递推公式。
From the basis of the limited difference theory, the author of this article works out the formula of the coefficient inverse operation of ■ summation. The proof of the theorem is simpler and easier than that of the predecessors, and the author derives the inverse operation formula of Bernoulli's numbers convenently.
