Number of fixed polyominoes in equilibrium; a fixed polyomino is in equilibrium when its center of mass is vertically aligned with a cell with minimal coordinate.
A171579
Number of fixed polyominoes in equilibrium; a fixed polyomino is in equilibrium when its center of mass is vertically aligned with a cell with minimal coordinate.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =2a(4) =5a(5) =12a(6) =27a(7) =70a(8) =192a(9) =589a(10) =1825a(11) =5870a(12) =18952a(13) =62997a(14) =211014a(15) =718474a(16) =2468741a(17) =8578400
External references
- oeis: A171579