106456domain: NAppears in sequencesa(n) = 1 + (26*n+17+7*n^2)*n/2.at n=30A095796Integers n such that the century defined by the interval [100n+1, 100n+100] (i.e., the (n+1)-st century) contains exactly one Ormiston prime pair and no other primes.at n=17A162895