87636

Appears in sequences

• Number of (n+1) X (1+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0000 0011 or 0111.at n=11A259243
• Triangle read by rows: T(n,k) is the number of simple graphs on n unlabeled nodes with k simplical vertices, 0 <= k <= n.at n=46A367145