268434944

Appears in sequences

• a(n) = 10*a(n-2) - 16*a(n-4) for n > 3, a(0) = 1, a(1) = 5, a(2) = 14, a(3) = 34.at n=18A083332
• Numbers whose binary representation is the concatenation of 2n-1 digits 1 and n-1 digits 0.at n=9A147590
• 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 209", based on the 5-celled von Neumann neighborhood.at n=27A286700