79628domain: NAppears in sequencesTheta series of lattice Kappa_7.at n=32A015236Integers n such that 6n, 36n, and 216n fall between pairs of twin primes, that is, 6n-1, 6n+1, 36n-1, 36n+1, 216n-1, and 216n+1 are prime.at n=20A192851