Number of fixed triangular n-ominoes of the regular tiling with Schläfli symbol {3,6} that have a common axis of symmetry coincident with cell altitudes and the point of the polyomino farthest along that axis in a specified direction is a cell edge center.
A364487
Number of fixed triangular n-ominoes of the regular tiling with Schläfli symbol {3,6} that have a common axis of symmetry coincident with cell altitudes and the point of the polyomino farthest along that axis in a specified direction is a cell edge center.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =1a(6) =5a(7) =2a(8) =13a(9) =5a(10) =36a(11) =16a(12) =96a(13) =45a(14) =262a(15) =128a(16) =720a(17) =368a(18) =1991a(19) =1047a(20) =5549a(21) =2995a(22) =15583a(23) =8607a(24) =44027a(25) =24788a(26) =125043a(27) =71620a(28) =356706a(29) =207412
External references
- oeis: A364487