51684

Appears in sequences

• Transform of A056594 by the T_{1,0} transformation (see link).at n=13A159339
• Number of (n+1) X (1+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=11A231295
• Number of free polyominoes of size 2n for which there exists at least one closed path that passes through each square exactly once.at n=9A361288