-5447

Appears in sequences

• Expansion of tan(x)*cos(sinh(x)).at n=4A009728
• Expansion of tanh(x)*exp(sin(x)).at n=9A009828
• G.f. satisfies: A(x) = 1/(1 + x*A(x^8)) and also the continued fraction: 1 + x*A(x^9) = [1; 1/x, 1/x^8, 1/x^64, 1/x^512, ..., 1/x^(8^(n-1)), ...].at n=64A101918
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 329", based on the 5-celled von Neumann neighborhood.at n=39A271276
• Inverse Euler transform of the sum-of-divisors or sigma function A000203.at n=52A320780
• Product_{n>=1} (1 + x^n)^a(n) = 1 + Sum_{n>=1} sigma(n) * x^n, where sigma = A000203.at n=52A328776