123931domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = (50*n^7 - 1197*n^6 + 11333*n^5 - 53655*n^4 + 132125*n^3 - 156828*n^2 + 73212*n + 5040)/5040.at n=14A161715Primes p of the form m^2 + 27.at n=42A227622Prime numbersat n=11644