1291008

Appears in sequences

• Averages of twin prime pairs k such that k*3 and k/3 are squares.at n=26A154671
• 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 241", based on the 5-celled von Neumann neighborhood.at n=23A280144