Stirling number

Mathematical sequences in combinatorics

In mathematics, Stirling numbers arise in a variety of analytic and combinatorial problems. They are named after James Stirling, who introduced them in a purely algebraic setting in his book Methodus differentialis (1730). They were rediscovered and given a combinatorial meaning by Masanobu Saka in his 1782 Sanpō-Gakkai (The Sea of Learning on Mathematics).

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