76227domain: NAppears in sequencesa(1) = 3, a(n) = a(n-1) + 4*(a(n-1)-floor(a(n-1)^(1/3))^3).at n=29A096297Number of (w,x,y,z) with all terms in {1,...,n} and w*x-y*z<=n.at n=19A212109Numbers k such that the first 9 digits of the k-th Lucas number are 1-9 pandigital.at n=26A216489