656039domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers n such that 85*2^n-1 is prime.at n=18A050568T(n,k) = 5*A046802(n,k) - 4*A007318(n,k), triangle read by rows (0 <= k <= n).at n=48A168290T(n,k) = 5*A046802(n,k) - 4*A007318(n,k), triangle read by rows (0 <= k <= n).at n=51A168290Prime numbersat n=53273