51171domain: NAppears in sequencesNumber of n X 4 binary arrays without the pattern 0 1 diagonally or vertically.at n=27A188838Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 43", based on the 5-celled von Neumann neighborhood.at n=42A269878