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aban n.  and  pancake n.

First numbers that belong to both sets:

1, 2, 4, 7, 11, 16, 22, 29, 37, 46, 56, 67, 79, 92, 106, 121, 137, 154, 172, 191, 211, 232, 254, 277, 301, 326, 352, 379, 407, 436, 466, 497, 529, 562, 596, 631, 667, 704, 742, 781, 821, 862, 904, 947, 991, 1000406, 3000026, 4000207, 5000704, 11000396, 19000531, 27000227, 49000051, 60000536, 75000629, 84000242, 88000012, 122000011, 163000541, 205000877, 235000361, 241000036, 328000079, 330000896, 364000672, 366000041, 390000557, 396000154, 398000792, 405000031, 428000654, 437000267, 441000452, 458000246, 476000086, 505000091, 552000152, 565000921, 571000322, 586000496, 610000057, 630000757, 684000592, 688000966, 734000456, 792000101, 814000727, 818000129, 857000701, 915000032, 935000147, 973000442, 1021000267, 1098000092, 1131000581, 1167000517, 1210000222, 1346000671, 1411000004, 1448000206, 1474000661, 1479000079, 1553000047, 1577000881, 1590000637, 1597000871, 1614000521, 1663000957, 1753000867, 1781000404, 1841000861, 1852000231, 1912000042, 1969000882, 2075000411, 2159000617, 2169000317, 2200000279, 2317000702, 2515000504, 2527000687, 2749000027, 2952000704, 2965000522, 3050000254, 3055000862, 3197000704, 3199000079, 3201000079, 3203000704, 3294000362, 3458000704, 3550000192, 3576000166, 3606000427, 3645000272, 3702000082, 4023000151, 4141000516, 4172000186, 4188000961, 4284000767, 4289000654, 4312000546, 4545000812, 4566000142, 4837000547, 5055000427, 5071000279, 5146000526, 5313000904, 5377000552, 5490000506, 5526000757, 5554000316, 5577000079, 5889000602, 5978000497, 5985000529, 6025000879, 6119000626, 6160000511, 6186000836, 6549000682, 6910000462, 7002000292, 7128000902, 7621000612, 7696000081, 7736000692, 7857000691, 8105000222, 8235000281, 8590000129, 9030000079, 9602000332, 9882000821, 9891000277, 10002000331, 10125000754, 10183000696, 10225000507, 10566000397, 10620000931, 10687000702, 10729000856, 10858000567, 11284000652, 11455000481, 11593000316, 11685000629, 12145000879, 12179000486, 12299000704, 12307000717, 12334000331, 12699000029, 12736000201, 12794000704, 12798000079, 12802000079, 12806000704, 13102000627, 13311000704, 13701000881, 13801000592, 13977000416, 14078000504, 14262000496, 14548000601, 14773000106, 14862000622, 14867000831, 15239000911, 15386000491, 15533000641, 15736000907, 15817000871, 15958000576, 16174000441, 16495000897, 16706000656, 16992000379, 17208000371, 17226000079, 17265000754, 17318000779, 17397000247, 17531000377, 17734000286, 18249000491, 18630000907, 18658000552, 18710000404, 18752000971, 18916000261, 18952000706, 18997000661, 19612000276, 19655000779, 19764000337, 20348000779, 20412000226, 20631000016, 20681000377, 20843000707, 20909000266, 20996000741, 21333000404, 21448000942, 21803000611, 21859000417, 21900000971, 21949000922, 22073000996, 22106000512, 22272000986, 22362000941, 22384000321, 22875000779, 22936000754, 22981000079, 23217000356, 23253000379, 24168000586, 24741000236, 24880000916, 25059000386, 25476000676, 25511000141, 26310000746, 26837000327, 26933000096, 26959000504, 27247000081, 27311000042, 27424000307, 27465000007, 27642000376, 27722000846.

Some larger examples :