First numbers that belong to both sets:
21,
57,
111,
183,
381,
813,
993,
1191,
1641,
1893,
2757,
4971,
5403,
5853,
6807,
7311,
8373,
9507,
10713,
12657,
13341,
14763,
15501,
16257,
18633,
21171,
22053,
24807,
26733,
27723,
30801,
35157,
36291,
39801,
41007,
49953,
58323,
59781,
67341,
70491,
73713,
75351,
78681,
82083,
100173,
105951,
128523,
137271,
141753,
148611,
150933,
167691,
177663,
182757,
195807,
212061,
220431,
223257,
226101,
243543,
246513,
261633,
264711,
267807,
277203,
289983,
306363,
309693,
313041,
330051,
336981,
343983,
347511,
380073,
387507,
395013,
406407,
421851,
433623,
437583,
453603,
465807,
490701,
507657,
511941,
516243,
529257,
542433,
569271,
601401,
606063,
639201,
693057,
703083,
723351,
738741,
754293,
780573,
791211,
801921,
829011,
839973,
851007,
856551,
878907,
890193,
895863,
930261,
989031,
1001001,
1013043,
1043463,
1055757,
1080561,
1105653,
1118307,
1124661,
1131033,
1150257,
1163163,
1195743,
1222131,
1269003,
1309881,
1358391,
1379451,
1429221,
1436403,
1479873,
1568757,
1583823,
1660233,
1722657,
1754301,
1770231,
1778223,
1786233,
1810371,
1826553,
1834671,
1859133,
1883757,
1950213,
1975431,
2000811,
2069283,
2077923,
2095257,
2121393,
2200773,
2227557,
2281611,
2308881,
2318007,
2354691,
2373141,
2438283,
2475903,
2513811,
2542431,
2590491,
2639001,
2658531,
2687961,
2727453,
2747307,
2777223,
2787231,
2797257,
2817363,
2857791,
2918973,
2929233,
2960121,
2970453,
2991171,
3064251,
3074763,
3106407,
3223821,
3256221,
3332451,
3343413,
3376407,
3465183,
3532521,
3543807,
3646191,
3761661,
3843561,
3855333,
3974043,
3986013,
4118871,
4229193,
4266291,
4278693,
4328481,
4353483,
4441557,
4454211,
4581741,
4711071,
4737153,
4802673,
4815831,
4829007,
4855413,
4961757,
4988523,
5001933,
5109861,
5177901,
5246391,
5273913,
5538963,
5567241,
5666781,
5868507,
5941407,
5985363,
6029481,
6073761,
6103371,
6133053,
6207573,
6237507,
6297591,
6388257,
6418623,
6449061,
6556161,
6602331,
6664143,
6679641,
6788631,
6819933,
6882753,
6930057,
6993381.