StirlingS1
StirlingS1[n, m] gives the Stirling number of the first kind, related to permutations with cycles.
Examples
Stirling numbers of the first kind:
Table[StirlingS1[4, k], {k, 0, 4}]
(* {0, 6, -11, 6, -1} *)Single value:
StirlingS1[5, 2]
(* 50 *)Please visit the official Wolfram Language Reference for more details.