Second column (k=3) sequence of array A078740 ((3,2)-Stirling2) divided by 6.

A091549

Second column (k=3) sequence of array A078740 ((3,2)-Stirling2) divided by 6.

Terms

    a(0) =1a(1) =28a(2) =960a(3) =43200a(4) =2520000a(5) =186278400a(6) =17069875200

External references