3651921domain: NAppears in sequencesSquares that are a difference between 2 positive cubes.at n=28A038596Magic sums of 3 X 3 semimagic squares of squares whose rows, columns, and at least one of the two main diagonals sum to the same number.at n=16A271021a(n) = sigma_2(n)^2.at n=35A356533