[0,1,4,7,11,16,22,28,35,43,52,61,70,81,92,103,115,
128,141,155,170,185,200,216,233,250,268,286,305,
325,344,365,386,408,430,452,475,499,523,548,573,
598,625,651,678,706,734,763,792,822,852,883,914,
945,978,1010,1043,1077,1111,1145,1180,1216,1252,
1288,1325]
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