100111010

Appears in sequences

• Binary representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 214", based on the 5-celled von Neumann neighborhood.at n=8A279936
• a(n) is the concatenation n in base 2, n-1 in base 2, ..., 0 in base 2.at n=4A300571