41707domain: NAppears in sequencesPartial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 734", based on the 5-celled von Neumann neighborhood.at n=42A273455Numbers k such that (prime(j)-1)^2 + 1 is prime for k <= j <= k + 2.at n=26A376522