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gapful n.  and  iban n.

First numbers that belong to both sets:

100, 110, 120, 121, 140, 143, 170, 200, 220, 240, 242, 300, 341, 374, 400, 440, 473, 700, 770, 1000, 1001, 1010, 1020, 1040, 1070, 1100, 1110, 1111, 1120, 1140, 1170, 1200, 1204, 1207, 1210, 1212, 1220, 1221, 1240, 1270, 1272, 1274, 1300, 1310, 1320, 1340, 1344, 1370, 1377, 1400, 1410, 1414, 1420, 1440, 1441, 1443, 1470, 1700, 1703, 1710, 1717, 1720, 1740, 1770, 1771, 2000, 2002, 2020, 2040, 2100, 2112, 2120, 2121, 2140, 2200, 2220, 2222, 2240, 2300, 2304, 2320, 2323, 2340, 2400, 2420, 2424, 2440, 2442, 2700, 2720, 2727, 2740, 2772, 3000, 3003, 3072, 3120, 3210, 3240, 3270, 3300, 3420, 3441, 3712, 3720, 3774, 4000, 4004, 4040, 4120, 4141, 4200, 4224, 4240, 4242, 4277, 4320, 4343, 4400, 4440, 4444, 4720, 4747, 4773, 7000, 7007, 7070, 7104, 7140, 7171, 7210, 7272, 7373, 7420, 7474, 7700, 7770, 7777, 10000, 10010, 10020, 10021, 10023, 10024, 10040, 10047, 10070, 10100, 10110, 10120, 10140, 10170, 10200, 10210, 10212, 10217, 10220, 10240, 10241, 10270, 10272, 10300, 10304, 10310, 10320, 10340, 10370, 10374, 10400, 10410, 10420, 10440, 10444, 10470, 10700, 10710, 10720, 10724, 10727, 10740, 10770, 11000, 11004, 11010, 11011, 11020, 11040, 11070, 11074, 11100, 11110, 11112, 11120, 11121, 11140, 11144, 11170, 11172, 11200, 11210, 11214, 11220, 11240, 11270, 11300, 11310, 11320, 11323, 11340, 11341, 11370, 11400, 11407, 11410, 11412, 11420, 11424, 11440, 11470, 11472, 11700, 11704, 11710, 11712, 11720, 11740, 11747, 11770, 11772, 11774, 12000, 12001, 12010, 12012, 12020, 12040, 12070, 12072, 12100, 12103, 12110, 12111, 12120, 12124, 12140, 12170, 12200, 12210, 12220, 12221, 12240, 12270, 12300, 12310, 12312, 12320, 12340, 12370, 12372, 12400, 12404, 12410, 12420, 12427, 12440, 12441, 12470, 12474, 12700, 12710, 12720, 12740, 12770, 12771, 14000, 14010, 14014, 14020, 14040, 14070.

Some larger examples :