102433domain: NPropertiesPrimalityPrimeyesAppears in sequencesExpansion of g.f. (1-4*x^2+2*x^3)/((1-x)*(1-2*x-2*x^2+2*x^3)).at n=13A106666Centered 22-gonal primes.at n=37A276262Prime numbersat n=9808