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Harshad n.  and  self n.

First numbers that belong to both sets:

1, 3, 5, 7, 9, 20, 42, 108, 110, 132, 198, 209, 222, 266, 288, 312, 378, 400, 468, 512, 558, 648, 738, 782, 804, 828, 918, 1032, 1098, 1122, 1188, 1212, 1278, 1300, 1368, 1458, 1526, 1548, 1638, 1704, 1728, 1818, 1974, 2007, 2022, 2088, 2112, 2156, 2178, 2200, 2268, 2312, 2358, 2448, 2470, 2538, 2604, 2628, 2718, 2997, 3078, 3100, 3168, 3258, 3348, 3416, 3438, 3504, 3528, 3616, 3618, 3640, 3842, 3864, 4046, 4068, 4112, 4158, 4248, 4338, 4404, 4428, 4494, 4518, 4887, 4920, 4988, 5010, 5058, 5148, 5238, 5304, 5328, 5372, 5418, 5697, 5754, 5820, 5833, 5910, 5967, 6000, 6048, 6138, 6204, 6228, 6318, 6384, 6720, 6777, 6810, 6900, 7038, 7104, 7128, 7150, 7216, 7218, 7475, 7543, 7587, 7598, 7620, 7644, 7710, 7800, 7857, 8028, 8118, 8274, 8320, 8397, 8432, 8520, 8610, 8667, 8700, 8880, 8924, 8937, 8959, 9253, 9420, 9477, 9510, 9534, 9545, 9600, 9723, 9747, 9925, 9960, 10032, 10098, 10109, 10122, 10188, 10212, 10278, 10300, 10346, 10368, 10458, 10548, 10638, 10660, 10704, 10728, 10794, 10816, 10818, 10963, 11007, 11022, 11088, 11112, 11178, 11200, 11268, 11312, 11358, 11448, 11492, 11538, 11604, 11628, 11718, 11830, 12078, 12100, 12168, 12236, 12258, 12348, 12438, 12504, 12528, 12618, 12673, 12684, 12987, 13068, 13112, 13158, 13248, 13338, 13404, 13428, 13518, 13685, 13797, 13920, 13944, 14010, 14058, 14126, 14148, 14170, 14238, 14304, 14328, 14383, 14416, 14418, 14552, 14574, 14820, 14877, 14910, 15000, 15048, 15138, 15204, 15228, 15318, 15340, 15687, 15720, 15755, 15810, 15834, 15900, 15922, 15957, 16038, 16082, 16093, 16104, 16128, 16218, 16464, 16497, 16620, 16710, 16767, 16800, 17028, 17094, 17118, 17520, 17577, 17610, 17700, 17724, 17825, 17847, 17880, 17913, 18354, 18387, 18420, 18510, 18600, 18657, 18925, 18927, 18960, 19142, 19197, 19320.

Some larger examples :