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pandigital  and  triangular n.

First numbers that belong to both sets:

15, 21, 78, 120, 210, 990, 1830, 2926, 8385, 12720, 13530, 17955, 23005, 28920, 29890, 37675, 40755, 128271, 131841, 162735, 219453, 248865, 299151, 315615, 318801, 334971, 396495, 440391, 443211, 493521, 535095, 615495, 694431, 699153, 785631, 2293011, 2353365, 3123750, 3862810, 4017195, 4364535, 4385241, 10064341, 11226691, 11527201, 12076155, 12140128, 13377378, 15520806, 16390675, 46923828, 64974300, 74024028, 108936180, 118834236, 119081028, 219147580, 220510500, 233463636, 235542660, 238678476, 248923828, 282090628, 284375476, 310515660, 325010260, 339861556, 342787836, 374052276, 1062489753, 1239845706, 1256984730, 1520843976, 1539264870, 1597283460, 1684930275, 1952843760, 1957346028, 1978236450, 2197480365, 2367098415, 2418079653, 2503948761, 2634980715, 2718609453, 2735891406, 2750483196, 2764518903, 2854316790, 2915768430, 3026847915, 3095782641, 3108542976, 3574816290, 3694517820, 3704581926, 3807459216, 3842970615, 3907854621, 4039521786, 4075916328, 4076819253, 4138725690, 4183975026, 4216879530, 4361079528, 4382960751, 4523098716, 4703869521, 4751906328, 4798521630, 4869315270, 4876521903, 4927316085, 4932678150, 4961325078, 5038724691, 5074928631, 5123098476, 5172309486, 5419706328, 5428976301, 5489267031, 5740936281, 5789364210, 5813492706, 5984672310, 6093472815, 6351490278, 6502389741, 6853921740, 6894021753, 6970321485, 7284063951, 7419386205, 7468925310, 7482130956, 7820439516, 7841965230, 7958362041, 8235641970, 8539742016, 8630549271, 8926417305, 8956372041, 8961324750, 9037258461, 9201478653, 9576380421, 9634871520, 9654871320.