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aban n.  and  pronic n.

First numbers that belong to both sets:

2, 6, 12, 20, 30, 42, 56, 72, 90, 110, 132, 156, 182, 210, 240, 272, 306, 342, 380, 420, 462, 506, 552, 600, 650, 702, 756, 812, 870, 930, 992, 2000810, 6000050, 8000412, 22000790, 43000806, 54000452, 98000100, 168000482, 176000022, 185000802, 207000156, 244000020, 245000756, 259000742, 261000180, 317000220, 321000972, 377000472, 419000430, 470000720, 475000230, 482000070, 497000142, 527000892, 591000410, 617000760, 633000440, 656000156, 715000860, 732000080, 792000306, 810000060, 839000190, 874000532, 882000902, 916000490, 952000170, 1010000180, 1104000302, 1142000642, 1172000990, 1220000112, 1291000830, 1317000390, 1347000102, 1468000910, 1545000942, 1555000922, 1561000590, 1584000200, 1599000156, 1601000156, 1636000256, 1651000056, 1830000062, 1870000292, 1881000270, 1946000882, 2042000532, 2196000182, 2199000342, 2289000492, 2381000820, 2420000442, 2539000932, 2659000790, 2822000006, 2837000432, 2896000410, 2903000520, 2958000156, 3106000092, 3425000052, 3539000610, 3562000806, 3617000022, 3704000460, 3813000750, 3824000082, 3875000250, 4150000820, 4305000156, 4338000632, 4400000556, 4751000256, 4793000592, 5401000572, 5411000040, 5498000052, 6100000506, 6105000090, 6398000156, 6402000156, 6485000370, 6588000722, 6871000772, 7045000290, 7100000382, 7152000330, 7212000852, 7283000940, 7290000542, 7404000162, 8046000300, 8344000370, 8573000690, 8909000156, 9132000282, 9489000332, 9859000556, 10110000852, 10142000556, 10737000780, 10869000770, 11108000630, 11154000156, 11956000992, 11963000000, 12123000920, 13669000310, 13820000922, 14004000582, 14397000156, 14403000156, 14859000506, 15392000160, 16210000442, 16323000882, 16470000560, 16781000222, 17097000780, 17180000256, 17867000556, 17969000352, 18060000156, 18759000332, 19204000662, 19689000806, 19705000250, 19773000072, 19782000552, 20004000660, 20217000782, 20931000300, 21132000792, 21203000156, 21573000006, 22083000212, 22299000912, 22910000960, 23027000262, 23186000630, 23571000312, 24358000970, 24668000660, 25398000056, 25457000256, 25472000400, 25596000156, 25604000156, 25711000062, 26297000732, 26827000310, 26971000212, 27954000830, 28039000152, 28524000990, 28573000260, 28705000050, 29349000540, 29535000306, 29546000210, 29663000670, 30167000282, 30411000156, 30529000350, 30772000980, 30825000470, 31861000512, 32348000880, 32553000200, 33984000756, 34393000662, 34416000740, 34452000156, 34794000492, 34819000202, 35062000752, 35319000422, 35468000570, 35663000562, 35829000510, 36443000900, 36498000980, 37420000806, 37832000520, 39059000322, 39093000680, 39224000550, 39528000672, 39563000120, 39643000130, 39989000756, 39991000506, 39993000306, 39995000156, 39997000056, 39999000006, 40001000006, 40003000056, 40005000156, 40007000306, 40009000506, 40011000756, 40824000450, 41249000702, 41262000030, 41362000752, 41421000962, 41818000530, 42666000806, 43718000832, 44768000640, 45875000040, 45962000156, 46434000710, 46459000392, 46506000756, 46811000522, 47193000360, 48699000362, 49482000470, 50118000770, 50217000372, 50901000156, 51022000280, 51173000010, 51731000580, 52049000306, 53674000652, 53866000190, 54494000160, 54622000082, 54848000612, 54930000012, 54945000812, 55284000750, 55941000842, 56247000060.

Some larger examples :