119496
domain: N
Appears in sequences
- Number of polyiamonds with 2n cells that tile the plane by translation but not by 180-degree rotation (Conway criterion).at n=12A075217
- Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically.at n=22A258521