536428369domain: NPropertiesPrimalityPrimeyesAppears in sequencesBase-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.at n=18A033130Expansion of (1-x)/(1-2*x-2*x^2-3*x^3).at n=19A077842Prime numbersat n=28170724