350549domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(0) = 1; for n >= 1, a(n) = 4*a(n-1) - (2^n - 1).at n=10A079319Primes that can be generated by the concatenation in base 4, in descending order, of two consecutive integers read in base 10.at n=37A287303Prime numbersat n=30013