Number of palindromic paths through the subset array of {1,2,...,n}; see Comments.
A208654
Number of palindromic paths through the subset array of {1,2,...,n}; see Comments.
Terms
- a(0) =1a(1) =2a(2) =18a(3) =144a(4) =12000a(5) =540000a(6) =388962000a(7) =108425318400
External references
- oeis: A208654