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iban n.  and  plaindrome

First numbers that belong to both sets:

1, 2, 3, 4, 7, 11, 12, 14, 17, 22, 23, 24, 27, 44, 47, 77, 111, 112, 114, 117, 122, 123, 124, 127, 144, 147, 177, 222, 223, 224, 227, 244, 247, 277, 344, 347, 377, 444, 447, 477, 777, 1111, 1112, 1114, 1117, 1122, 1123, 1124, 1127, 1144, 1147, 1177, 1222, 1223, 1224, 1227, 1244, 1247, 1277, 1344, 1347, 1377, 1444, 1447, 1477, 1777, 2222, 2223, 2224, 2227, 2244, 2247, 2277, 2344, 2347, 2377, 2444, 2447, 2477, 2777, 3344, 3347, 3377, 3444, 3447, 3477, 3777, 4444, 4447, 4477, 4777, 7777, 11111, 11112, 11114, 11117, 11122, 11123, 11124, 11127, 11144, 11147, 11177, 11222, 11223, 11224, 11227, 11244, 11247, 11277, 11344, 11347, 11377, 11444, 11447, 11477, 11777, 12222, 12223, 12224, 12227, 12244, 12247, 12277, 12344, 12347, 12377, 12444, 12447, 12477, 12777, 14444, 14447, 14477, 14777, 17777, 22222, 22223, 22224, 22227, 22244, 22247, 22277, 22344, 22347, 22377, 22444, 22447, 22477, 22777, 23344, 23347, 23377, 23444, 23447, 23477, 23777, 24444, 24447, 24477, 24777, 27777, 44444, 44447, 44477, 44777, 47777, 77777, 111111, 111112, 111114, 111117, 111122, 111123, 111124, 111127, 111144, 111147, 111177, 111222, 111223, 111224, 111227, 111244, 111247, 111277, 111344, 111347, 111377, 111444, 111447, 111477, 111777, 112222, 112223, 112224, 112227, 112244, 112247, 112277, 112344, 112347, 112377, 112444, 112447, 112477, 112777, 114444, 114447, 114477, 114777, 117777, 122222, 122223, 122224, 122227, 122244, 122247, 122277, 122344, 122347, 122377, 122444, 122447, 122477, 122777, 123344, 123347, 123377, 123444, 123447, 123477, 123777, 124444, 124447, 124477, 124777, 127777, 144444, 144447, 144477, 144777, 147777, 177777, 222222, 222223, 222224, 222227, 222244, 222247, 222277, 222344, 222347, 222377, 222444, 222447, 222477, 222777, 223344, 223347, 223377, 223444, 223447, 223477, 223777, 224444, 224447, 224477, 224777, 227777, 244444, 244447, 244477, 244777, 247777, 277777, 344444, 344447, 344477, 344777, 347777, 377777, 444444, 444447, 444477, 444777, 447777, 477777, 777777.