Published October 4, 2005 | Version v1
Journal article Open

On 2-Adic Orders of Stirling Numbers of the Second Kind

Authors/Creators

  • 1. Department of Mathematics, University College Dublin, Belfield, Dublin 4, Ireland

Description

We prove that for any k = 1,... , 2n the 2-adic order of the Stirling number S(2n, k) of the second kind is exactly d(k) − 1, where d(k) denotes the number of 1’s among the binary digits of k. This confirms a conjecture of Lengyel.

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