100449domain: NAppears in sequencesNumbers k such that k and 9*k are anagrams.at n=8A023093Numbers k such that k and k^2 use only the digits 0, 1, 4, 6 and 9.at n=41A136862Minimum value unattainable as the sum of 4 attained values of a*b*c with a,b,c 0..n integers.at n=30A225266