3426576
domain: N
Appears in sequences
- Number of free polyominoes (or square animals) with n cells.at n=15A000105
- Triangle read by rows: T(n,k) (n>=1) gives the number of n-indecomposable polyominoes with k cells (k >= n).at n=105A125753
- Triangle read by rows: T(n,k) (n>=1) gives the number of n-indecomposable polyominoes with k cells (k >= 1).at n=105A125761
- Number of free polyominoes with 2n-1 cells.at n=7A210997