-2631

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 493", based on the 5-celled von Neumann neighborhood.at n=29A272546
• Expansion of g.f. A(x) = Sum_{n=-oo..+oo} x^n * (i + x^n)^(2*n), where i^2 = -1.at n=42A363569
• Expansion of 1 / Sum_{k in Z} x^(3*k) / (1 - x^(5*k+1)).at n=52A375064