a(n) is the number of free equable polyominoes of size 2n and perimeter 2n.
A354864
a(n) is the number of free equable polyominoes of size 2n and perimeter 2n.
Terms
- a(0) =1a(1) =6a(2) =59a(3) =581a(4) =4812a(5) =36666a(6) =261515a(7) =1802151a(8) =12116488
External references
- oeis: A354864