83925549247domain: NAppears in sequencesPrimes of the form n^6 + n^5 + n^4 + n^3 + n^2 + n + 1.at n=16A088550Primes of the form k^6 + k^5 + k^4 + k^3 + k^2 + k + 1 where k is nonprime.at n=9A194194