Number of staircase polygons of perimeter 2n with 3 (staircase polygon) holes on square lattice (not allowing rotations).
A057412
Number of staircase polygons of perimeter 2n with 3 (staircase polygon) holes on square lattice (not allowing rotations).
Terms
- a(0) =28a(1) =884a(2) =15266a(3) =191688a(4) =1964414a(5) =17460336a(6) =139630696a(7) =1029053248a(8) =7106319403a(9) =46539551768a(10) =291656481886
External references
- oeis: A057412