3031329797domain: NAppears in sequencesa(n) = smallest prime p(1) in a symmetrical constellation of n consecutive twin primes: p(1), p(1)+2, ..., p(n), p(n)+2.at n=4A274792Primes starting 10-tuples of consecutive primes that have symmetrical gaps about their mean and form 5 pairs of twin primes.at n=0A336966