Number of rhombus tilings of a triangular shape formed by n*(n+1)/2 adjacent hexagons.
A390149
Number of rhombus tilings of a triangular shape formed by n*(n+1)/2 adjacent hexagons.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =104a(4) =3100a(5) =240426a(6) =48701198a(7) =25827984000
External references
- oeis: A390149