43209

Appears in sequences

• Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.at n=2A209806
• Number of (n+1)X4 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.at n=2A209809
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.at n=12A209814
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 585", based on the 5-celled von Neumann neighborhood.at n=7A273074
• Number of (undirected) paths in the n-book graph.at n=21A307921
• Expansion of Product_{i>=1, j>=1} 1/(1 - i*j*x^(i*j)).at n=13A318415
• a(n) is the least triprime k such that k + n is the next triprime after k.at n=28A366673