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中心正方形n。  有害的。

属于这两组的第一个数字:

5,13,25,41,61,145,181,265,313,421,481,545,613,761,841,925,1201,1301,1513,1741,2113,2245,2521,2965,3121,3613,3785,4141,4513,4705,5305,6385,7321,7813,8065,8321,8581,9113,10513,10805,12325,16381,17113,17861,18625,21841,23113,23545,24865,25313,25765,26681,27613,33025,33541,34585,38921,44105,47125,47741,48985,50881,60901,61601,63725,65885,69565,70313,71821,73345,74113,80401,82013,82825,89465,90313,92021,99013,100801,104425,109045,109981,111865,114721,117613,118585,121525,125501,131585,132613,134681,145261,147425,148513,149605,156241,159613,160745,163021,165313,169945,177013,187885,191581,202885,211901,218461,221113,222445,225121,229165,233245,237361,240125,242905,244301,245701,255613,258481,262813,264265,271585,277513,295681,309685,312841,319201,322405,324013,327241,332113,345281,360401,367225,377581,379321,382813,388081,400513,402305,411325,413141,420445,424121,433381,440861,452201,454105,465613,469481,481181,485113,487085,491041,495013,503005,507025,511061,515113,519181,525313,527365,531481,552301,556513,571381,586445,588613,590785,603901,608305,612725,621613,630565,632813,641845,653225,660101,676285,678613,680945,685621,690313,709241,714013,716405,718801,721201,726013,728425,730841,735685,747865,767561,777505,782501,787513,790025,833341,838513,846301,851513,867245,888445,891113,893785,896461,907205,909901,912601,918013,928885,937081,942565,956345,961885,964661,970225,978601,981401,987013,998285,1001113,1003945,1012465,1018165,1023881,1026745,1035361,1038241,1041125,1061425,1081921,1105585,1111541,1138541,1141561,1150645,1162813,1181185,1209013,1218361,1221485,1230881,1240313,1243465,1249781,1259285,1265641,1268825,1272013,1275205,1284805,1291225,1304113,1343161,1359601,1369513,1372825,1396121,1399465,1416245,1422985,1439905,1453513,1463761,1477481,1480921,1484365,1494721,1498181,1501645,1529501,1547041,1550561,1554085,1575313,1585981,1589545,1607425.

一些较大的示例: