-1657

Appears in sequences

• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 147", based on the 5-celled von Neumann neighborhood.at n=21A270293
• A Seidel matrix A(n,k) read by antidiagonals downwards.at n=37A323834
• A Seidel matrix A(n,k) read by antidiagonals downwards.at n=43A323834