94819domain: NPropertiesPrimalityPrimeyesAppears in sequencesT(n,n), array T as in A047100.at n=10A047102Number of positive integers <= 2^n of form 3 x^2 + 7 y^2.at n=20A054164Smallest of four consecutive primes whose average is a triangular number.at n=39A226155Prime numbersat n=9142