3752361domain: NAppears in sequencesEuler transform of 1, 1, 3, 8, 23, ... (A050535).at n=13A076866Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 742", based on the 5-celled von Neumann neighborhood.at n=11A273483