-2964

Appears in sequences

• Expansion of (1-x)^(-1)/(1-2*x+x^2+2*x^3).at n=15A077857
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 131", based on the 5-celled von Neumann neighborhood.at n=35A270224