Hello, seqfans. A happy new year !!!! I made some equations for 2004. 2004^3 * 1000^3 = 1923840^3 + 975280^3 - 13360^3 = 1788825^3 + 1324590^3 - 6465^3 2004^6 = 3959307^3 + 1393389^3 + 1494^3 = 3848682^3 + 1980119^3 + 27889^3 2004 * 10^10 = 22625^3 + 20375^3 - 250^3 Yasutoshi