50601

Appears in sequences

• Number of 4 X n 0..1 arrays with diagonals and antidiagonals unimodal and rows nondecreasing.at n=18A223951
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 141", based on the 5-celled von Neumann neighborhood.at n=42A270284