2078720

Appears in sequences

• On a 3 X 3 board, number of n-move routes of chess king ending in the central square.at n=9A086348
• Number of 9-step self-avoiding walks on an n X n square summed over all starting positions.at n=21A188154
• 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 241", based on the 5-celled von Neumann neighborhood.at n=20A287097