12569363domain: NPropertiesPrimalityPrimeyesAppears in sequencesExpansion of (1-x)/(1-x^2+2*x^3).at n=40A078028G.f. x*(x^2+1)*(x^3-x-1)/((2*x^3+x^2-1)*(x^4+1)).at n=41A107854The maximum number of coins that can be processed in n weighings where all coins are real except for one LHR-coin starting in the light state.at n=19A279673Prime numbersat n=822920