845295domain: NAppears in sequencesNumbers k for which 2*k+7, 4*k+7, 6*k+7, 8*k+7, 10*k+7 and 12*k+7 are primes.at n=33A210505a(n) is the total number of down steps between the 3rd and 4th up steps in all 3-Dyck paths of length 4*n.at n=8A334646