254813386571domain: NAppears in sequencesA generalization of Euclid-Mullin sequence A000945 applied to generate only primes of the form 4k+3: let Q be the product of all preceding terms, then a(n) is the smallest prime factor of the form 4k+3 of whichever of {Q+2, Q+4} has the form 4k+3.at n=11A389974