Third column (k=4) of array A090438 ((4,2)-Stirling2).

A091033

Third column (k=4) of array A090438 ((4,2)-Stirling2).

Terms

    a(0) =1a(1) =180a(2) =25200a(3) =4233600a(4) =898128000a(5) =239740300800

External references