688127

Appears in sequences

• a(n) = 21*2^n - 1.at n=15A171389
• Decimal representation of the middle column of the "Rule 169" elementary cellular automaton starting with a single ON (black) cell.at n=19A267589
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 633", based on the 5-celled von Neumann neighborhood.at n=21A290065