The sequence A059515(3,n). Number of ways of placing n identifiable nonnegative intervals with a total of exactly three starting and/or finishing points.
A059517
The sequence A059515(3,n). Number of ways of placing n identifiable nonnegative intervals with a total of exactly three starting and/or finishing points.
Terms
- a(0) =0a(1) =0a(2) =12a(3) =138a(4) =1056a(5) =7050a(6) =44472a(7) =273378a(8) =1659936a(9) =10018650a(10) =60289032a(11) =362265618a(12) =2175188016a(13) =13055911050a(14) =78349815192a(15) =470141937858
External references
- oeis: A059517