Number of free polypentagrams with n cells.
A211179
Number of free polypentagrams with n cells.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =31a(4) =238a(5) =2020a(6) =17754a(7) =160820a(8) =1479536a(9) =13792972a(10) =129839465
External references
- oeis: A211179