Signed Stirling Number of the First Kind of 1

Theorem

 * $\map s {1, n} = \delta_{1 n}$

where:
 * $\map s {1, n}$ denotes a signed Stirling number of the first kind
 * $\delta_{1 n}$ is the Kronecker delta.

Also see

 * Unsigned Stirling Number of the First Kind of 1
 * Stirling Number of the Second Kind of 1


 * Particular Values of Signed Stirling Numbers of the First Kind