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平衡的n。  三角形n。

属于这两组的第一个数字:

10,15,21,78,120,153,210,528,595,630,666,820,990,1830,2278,2701,2926,7503,8001,8385,9045,9453,9870,10585,11476,12403,12720,13366,13530,13861,14365,14535,15931,17955,18721,18915,23005,23436,28920,29890,30876,31878,32385,34191,34716,35245,36046,37675,37950,39340,39621,40470,40755,41905,42195,42778,43365,44551,45150,45451,46665,48516,49455,50086,50403,51681,52003,52326,54946,55945,56616,57630,57970,59685,62128,128271,131841,136503,138601,140715,145530,146070,149331,149878,150426,154290,158766,159330,159895,162735,167331,173166,174936,175528,176715,185136,185745,190036,194376,200028,201295,202566,203203,207690,210276,214840,216153,219453,220780,222778,224785,226128,228826,230860,233586,236328,241860,242556,248865,250278,250986,253116,258121,294528,299151,310866,315615,318801,330078,332520,334971,335790,343206,349030,352380,379756,396495,405450,415416,419070,427350,434778,440391,443211,448878,449826,456490,464166,465130,468996,483636,488566,492528,493521,495510,500500,503506,507528,527878,535095,538203,540280,553878,564453,567645,568711,578350,579426,588070,595686,598965,606651,615495,616605,625521,626640,634501,657231,687378,689725,694431,696790,699153,709836,719400,727821,730236,731445,733866,736291,741153,743590,757065,764466,770661,773146,779376,785631,791911,799480,809628,812175,814726,816003,828828,833986,837865,857395,862641,866586,869221,889111,891780,893116,897130,924120,925480,926841,930930,936396,943251,947376,948753,951510,952890,968136,970921,984906,986310,1011753,1016025,1020306,1024596,1040403,2137278,2141415,2160081,2170486,2176741,2185095,2208151,2216565,2220778,2222886,2246140,2267385,2271646,2273778,2275911,2280180,2288730,2293011,2320935,2327403,2333880,2340366,2342530,2353365,2375110,2381653,2388205,2399145,2405721,2421100,2429910,2432115,2443155,2447578,2454220,2460871,2463090,2483106,2494261,2505441,2516646,2525628,2534626,2541385,2543640,2545896.

一些较大的示例: