49159

Appears in sequences

• Generalized Fibonacci numbers: a(n) = a(n-1) + 9*a(n-2).at n=9A015445
• a(n) = (4*n + 1)^(1/2)/(4*n + 1)*((1 - p)*q^n - (1 - q)*p^n), where p = (1 - (4*n + 1)^(1/2))/2 and q = (1 + (4*n + 1)^(1/2))/2.at n=8A171180
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 902", based on the 5-celled von Neumann neighborhood.at n=46A290665
• Expansion of 1/(1 - x/(1 - 9*x^3)^(2/3)).at n=15A373544