Number of permutations of n distinct letters (ABCD...) each of which appears thrice with 4 fixed points.

A124070

Number of permutations of n distinct letters (ABCD...) each of which appears thrice with 4 fixed points.

Terms

    a(0) =9a(1) =324a(2) =69039a(3) =30573900a(4) =24571261710

External references