91827domain: NAppears in sequencesPartial sums of A080180.at n=27A080181Greedy Egyptian fraction expansion of log(3).at n=3A157718Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 721", based on the 5-celled von Neumann neighborhood.at n=40A273447