[0,1,15,31,60,91,135,181,240,301,375,451,540,631, 735,841,960,1081,1215,1351,1500,1651,1815,1981, 2160,2341,2535,2731,2940,3151,3375,3601,3840,4081, 4335,4591,4860,5131,5415,5701,6000,6301,6615,6931, 7260,7591]