|
| |
|
|
A057414
|
|
Number of staircase polygons of area n with one (staircase polygon) hole on square lattice (not allowing rotations).
|
|
2
| |
|
|
1, 4, 18, 62, 205, 624, 1841, 5214, 14448, 39118, 104281, 273900, 711416, 1828950, 4663203, 11801056, 29677044, 74209404, 184655403, 457446252, 1128794669, 2775534900, 6802886782, 16625602146, 40524317635
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
