184679137domain: NPropertiesPrimalityPrimeyesAppears in sequencesExpansion of (1+x+x^2) / (1-4*x-4*x^2-x^3).at n=12A275906a(n) = 2*a(n-1) + a(n-3) with initial terms 1,3,5.at n=24A285184Prime numbersat n=10276075