Search a number
centered heptagonal n.  and  deficient n.

First numbers that belong to both sets:

1, 8, 22, 43, 71, 106, 148, 197, 253, 316, 386, 463, 547, 638, 841, 953, 1072, 1198, 1331, 1471, 1618, 1772, 1933, 2101, 2276, 2458, 2647, 2843, 3046, 3473, 3697, 3928, 4166, 4411, 4663, 4922, 5188, 5461, 5741, 6028, 6322, 6623, 6931, 7246, 7897, 8233, 8926, 9283, 9647, 10018, 10396, 10781, 11173, 11572, 11978, 12391, 12811, 13238, 13672, 14113, 14561, 15016, 15478, 15947, 16423, 16906, 17396, 17893, 18397, 18908, 19426, 19951, 20483, 21022, 21568, 22121, 22681, 23248, 23822, 24403, 24991, 25586, 26188, 26797, 27413, 28036, 28666, 29303, 29947, 30598, 31256, 31921, 32593, 33272, 33958, 34651, 35351, 36058, 36772, 37493, 38221, 38956, 39698, 40447, 41203, 41966, 42736, 43513, 44297, 45088, 45886, 46691, 47503, 48322, 49148, 49981, 50821, 51668, 52522, 53383, 54251, 55126, 56008, 56897, 57793, 59606, 60523, 61447, 62378, 63316, 64261, 65213, 66172, 67138, 68111, 69091, 70078, 71072, 72073, 73081, 75118, 76147, 77183, 78226, 79276, 80333, 81397, 82468, 83546, 84631, 85723, 86822, 87928, 89041, 90161, 91288, 92422, 93563, 94711, 95866, 97028, 98197, 99373, 100556, 101746, 102943, 104147, 105358, 106576, 107801, 109033, 110272, 111518, 112771, 114031, 115298, 116572, 117853, 119141, 120436, 121738, 123047, 124363, 125686, 127016, 128353, 129697, 131048, 132406, 133771, 135143, 136522, 137908, 139301, 140701, 142108, 143522, 144943, 146371, 147806, 150697, 152153, 153616, 155086, 156563, 158047, 159538, 161036, 162541, 164053, 165572, 167098, 168631, 170171, 171718, 174833, 176401, 177976, 179558, 181147, 182743, 184346, 185956, 187573, 189197, 190828, 192466, 194111, 195763, 197422, 200761, 202441, 204128, 205822, 207523, 209231, 210946, 212668, 214397, 216133, 217876, 219626, 221383, 223147, 224918, 226696, 228481, 230273, 232072, 233878, 235691, 237511, 239338, 241172, 243013, 244861, 246716, 248578, 250447, 252323, 254206, 257993, 259897, 261808, 263726, 265651, 267583, 269522, 271468, 273421, 275381, 277348, 279322, 281303, 283291, 285286, 287288, 289297, 291313, 293336.

Some larger examples :