53045

Appears in sequences

• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=29A186484
• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock commuting with each of its horizontal and vertical 2X2 subblock neighbors.at n=34A186484
• Number of unlabeled, unrooted distance-hereditary graphs on n vertices.at n=9A280766