Total number of regions between the free polyominoes with n cells and their bounding boxes.
A380285
Total number of regions between the free polyominoes with n cells and their bounding boxes.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =5a(4) =21a(5) =71a(6) =255a(7) =961a(8) =3630a(9) =13973a(10) =53938a(11) =209641a(12) =815784a(13) =3183642a(14) =12439291a(15) =48686549a(16) =190787588a(17) =748645732
External references
- oeis: A380285