71803

Appears in sequences

• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 605", based on the 5-celled von Neumann neighborhood.at n=40A273177
• G.f. A(x) satisfies A(x) = 1 / (1 - x*(1 + x*A(x))^3).at n=9A364742