602468

Appears in sequences

• Number of (n+1)X(n+1) 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=2A232130
• Number of (n+1)X(3+1) 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=2A232132
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=12A232137
• Number of (3+1)X(n+1) 0..2 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=2A232140
• a(n) is the number of 2n-celled fixed polyominoes with at least 180 degree rotational symmetry about a vertex of a square in the lattice.at n=11A390655