-2248

Appears in sequences

• Expansion of (1-x)/(1+2*x+x^2+x^3).at n=13A078065
• Expansion of f(-x^3) * f(-x^6) / (f(x) * f(-x^4)) in powers of x where f() is a Ramanujan theta function.at n=23A261252
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 105", based on the 5-celled von Neumann neighborhood.at n=27A270163