158410

Appears in sequences

• a(n) = ( (7 + 2*sqrt(2))^n - (7 - 2*sqrt(2))^n )/(4*sqrt(2)).at n=5A154347
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 457", based on the 5-celled von Neumann neighborhood.at n=19A282362