Search a number
centered heptagonal n.  and  balanced n.

First numbers that belong to both sets:

197, 316, 841, 2458, 3256, 3473, 9647, 10781, 11572, 12391, 13672, 14113, 14561, 15016, 18397, 36058, 36772, 37493, 38221, 41203, 42736, 48322, 51668, 52522, 56008, 56897, 140701, 156563, 167098, 184346, 185956, 189197, 202441, 207523, 219626, 221383, 226696, 228481, 233878, 241172, 269522, 309772, 420218, 427526, 459922, 539197, 547471, 564208, 595547, 601336, 633676, 645646, 648656, 676061, 682228, 691531, 700897, 704033, 713483, 742211, 764947, 774796, 791351, 804721, 821591, 824986, 828388, 831797, 842066, 873251, 880258, 894356, 901447, 912136, 915713, 930091, 951868, 962851, 1003661, 2029588, 2110333, 2126671, 2154041, 2170547, 2176063, 2220443, 2231608, 2270906, 2276548, 2282197, 2333353, 2390858, 2396647, 2414056, 2437366, 2454922, 2466661, 2478428, 2519833, 2543647, 2561581, 2609713, 2676626, 2688883, 2701168, 2713481, 2775466, 2787947, 2794198, 2800456, 2806721, 2876098, 2907913, 2946322, 2972068, 2984983, 3076172, 3109072, 3182068, 3202123, 3269428, 3378572, 3447697, 3454648, 3482522, 3510508, 3517522, 3566816, 3623572, 3637831, 3659272, 3666433, 3709546, 3716756, 3723973, 3738428, 3803822, 3966061, 4010896, 4116491, 4139297, 4968853, 4977197, 5094748, 5103197, 5299456, 5446897, 5703083, 5801797, 5946893, 5992603, 6020113, 6084548, 6214447, 6261172, 6279911, 6430831, 6478361, 6516511, 6894343, 7092233, 8081081, 8209223, 8295211, 8392483, 8479423, 8555863, 8643643, 8831663, 8865053, 8920843, 9032948, 9044197, 9055453, 9100547, 9123136, 9145753, 9157072, 9168398, 9202418, 9225133, 9259258, 9293446, 9316273, 9373463, 9476846, 9673672, 9731947, 9755306, 9802108, 9837283, 9849022, 9943186, 10073393, 10085272, 10168621, 10192498, 10300291, 10348381, 10360421, 10372468, 10384522, 10590511, 10602691, 10639273, 10712626, 10773946, 10860088, 10884763, 10897111, 10921828, 10958956, 10971346, 11033401, 11083171, 11108098, 11233153, 11384143, 11485363, 11638033, 11727556, 11740373, 11817422, 11856041, 11920546, 11933468, 11985226, 12128138, 12167261, 12219523, 12245696, 12258793, 12285008, 12363821, 12376981, 12641651, 12788413, 12841991, 12868822, 12936022, 12962951, 12989908, 13057423, 13125113, 13138672, 13261018, 13274647, 13329233, 13342897, 13356568, 13438741, 13452461, 13507411, 13645276, 13742198, 13756072, 13853386, 13867316, 13909148, 14021008, 14161463, 14231953, 14288471, 14373458, 14501411, 14587028, 14615623, 14658568, 14672897, 14888672, 14989906, 15033397, 15207991, 15222586, 15281036, 15295666, 15368921, 15398272, 15427651, 15604513.

Some larger examples :