-3955

Appears in sequences

• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 9.at n=44A060028
• a(n) = 5*a(n-1) - 9*a(n-2), with a(0)=0, a(1)=1.at n=8A190970
• a(n) = -a(n-1) - 3*a(n-2) with n>1, a(0)=0, a(1)=1.at n=16A214733
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood.at n=31A270937
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 275", based on the 5-celled von Neumann neighborhood.at n=31A271094