[1,3,6,10,15,21,27,35,43,52,62,73,85,97,111,125,
140,156,173,191,209,229,249,270,292,315,339,363,
389,415,442,470,499,529,559,591,623,656,690,725,
761,797,835,873,912,952,993,1035,1077,1121,1165,
1210,1256,1303,1351,1399,1449,1499,1550,1602,1655,
1709,1763,1819,1875,1932,1990,2049,2109,2169,2231,
2293]
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