Number of rooted 2-dimensional polyominoes with n pentagonal cells, with no symmetries removed.
A051738
Number of rooted 2-dimensional polyominoes with n pentagonal cells, with no symmetries removed.
Terms
- a(0) =1a(1) =5a(2) =30a(3) =180a(4) =1075a(5) =6366a(6) =37520a(7) =220500a(8) =1293615a(9) =7581240a(10) =44398387a(11) =259881960a(12) =1520633270a(13) =8895116230
External references
- oeis: A051738