1 100 The 3n + 1 problem 26485 1 2 102 Ecological Bin Packing 10608 2 3 10071 Back to High School Physics 9554 3 4 10055 Hashmat the Brave Warrior 9432 3 5 272 TEX Quotes 8192 3 6 458 The Decoder 7289 4 7 136 Ugly Numbers 6729 4 8 10038 Jolly Jumpers 6319 4 9 10035 Primary ...