Search a number
congruent n.  and  self n.

First numbers that belong to both sets:

5, 7, 20, 31, 53, 86, 110, 143, 154, 165, 198, 222, 244, 255, 277, 299, 310, 312, 323, 334, 367, 389, 413, 446, 457, 468, 479, 501, 514, 525, 536, 558, 580, 591, 602, 613, 615, 637, 670, 692, 703, 727, 749, 760, 782, 793, 815, 828, 839, 850, 861, 894, 905, 916, 918, 951, 973, 984, 995, 1006, 1021, 1054, 1076, 1087, 1109, 1111, 1122, 1133, 1144, 1155, 1166, 1199, 1212, 1223, 1245, 1278, 1300, 1311, 1335, 1346, 1357, 1368, 1379, 1390, 1412, 1414, 1436, 1447, 1469, 1502, 1513, 1526, 1559, 1581, 1592, 1614, 1616, 1638, 1649, 1660, 1671, 1693, 1704, 1717, 1750, 1783, 1794, 1805, 1816, 1829, 1862, 1884, 1895, 1917, 1919, 1941, 1974, 2007, 2022, 2044, 2055, 2077, 2110, 2134, 2145, 2167, 2189, 2200, 2213, 2246, 2257, 2268, 2279, 2301, 2325, 2358, 2391, 2413, 2415, 2437, 2470, 2492, 2503, 2516, 2527, 2549, 2582, 2604, 2615, 2639, 2661, 2672, 2694, 2716, 2718, 2740, 2751, 2773, 2784, 2806, 2817, 2830, 2863, 2885, 2896, 2907, 2918, 2942, 2953, 2964, 2975, 2997, 3008, 3023, 3045, 3056, 3078, 3100, 3111, 3124, 3135, 3157, 3168, 3190, 3214, 3247, 3269, 3280, 3302, 3326, 3348, 3359, 3381, 3392, 3414, 3416, 3438, 3471, 3493, 3504, 3517, 3550, 3572, 3583, 3594, 3605, 3616, 3629, 3640, 3662, 3695, 3717, 3719, 3741, 3774, 3796, 3807, 3831, 3842, 3853, 3864, 3886, 3919, 3932, 3943, 3965, 3998, 4024, 4046, 4079, 4101, 4112, 4114, 4125, 4158, 4180, 4191, 4213, 4215, 4237, 4248, 4270, 4292, 4303, 4316, 4327, 4349, 4382, 4404, 4415, 4439, 4461, 4472, 4494, 4518, 4529, 4540, 4551, 4573, 4584, 4595, 4606, 4630, 4641, 4663, 4674, 4685, 4696, 4718, 4720, 4731, 4742, 4764, 4775, 4797, 4821, 4832, 4843, 4854, 4887.

Some larger examples :