A073566 Numbers n such that n, n+1 and n+2 have the same number of anti-divisors.

19, 74, 90, 102, 148, 187, 204, 212, 213, 231, 232, 233, 328, 329, 351, 457, 469, 519, 546, 547, 555, 573, 756, 859, 868, 869, 870, 879, 980, 981, 991, 1025, 1080, 1081, 1096, 1120, 1121, 1122, 1132, 1158, 1211, 1413, 1420, 1430, 1431, 1441, 1467, 1482