469567domain: NAppears in sequencesa(n) = n^2*(n^2+3)/4.at n=36A039623a(n) = 7*a(n-1) - 14*a(n-2) + 7*a(n-3) with a(0)=0, a(1)=1, a(2)=4.at n=11A215493Numbers k such that k*sum_of_digits(k) is a perfect cube.at n=31A227227Positive integers n such that n^2 divided by the digital sum of n is a cube.at n=28A236749