Number of permutations of n distinct letters (ABCD...) each of which appears 4 times and having n-3 fixed points.
A123293
Number of permutations of n distinct letters (ABCD...) each of which appears 4 times and having n-3 fixed points.
Terms
- a(0) =0a(1) =0a(2) =128a(3) =512a(4) =1280a(5) =2560a(6) =4480a(7) =7168a(8) =10752a(9) =15360a(10) =21120a(11) =28160
External references
- oeis: A123293