-3479

Appears in sequences

• a(n)=1-4*n-4*n^2.at n=29A184882
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 261", based on the 5-celled von Neumann neighborhood.at n=29A271064
• a(n) = [x^n] Product_{k>=1} (1 - n*x^k)^k.at n=7A298986
• Inverse Euler transform of the Moebius function A008683.at n=28A320781
• Product_{n>=1} (1 + a(n)*x^n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=28A353926
• Product_{n>=1} (1 + x^n)^a(n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=28A353927
• Product_{n>=1} 1 / (1 - a(n)*x^n) = 1 + Sum_{n>=1} mu(n)*x^n, where mu = A008683.at n=28A353949