48202domain: NAppears in sequencesNumbers k such that sum of divisors of k^2 is a square.at n=11A008847Numbers k such that k and k^2 use only the digits 0, 2, 3, 4 and 8.at n=36A136885Tetraprimes (or products of exactly four distinct prime numbers) that are the sum of two successive tetraprimes.at n=19A380348