搜索号码
交替n。  上下颠倒。

属于这两组的第一个数字:

5,258,456,654,852,12589,14569,16549,18529,32587,34567,36547,38527,52585,54565,56545,58525,72583,74563,76543,78523,92581,94561,96541,98521,2125898,2145698,2165498,2185298,2325878,2345678,2365478,2385278,2525858,2545658,2565458,2585258,2725838,2745638,2765438,2785238,2925818,2945618,2965418,2985218,4125896,4145696,4165496,4185296,4325876,4345676,4365476,4385276,4525856,4545656,4565456,4585256,4725836,4745636,4765436,4785236,4925816,4945616,4965416,4985216,6125894,6145694,6165494,6185294,6325874,6345674,6365474,6385274,6525854,6545654,6565454,6585254,6725834,6745634,6765434,6785234,6925814,6945614,6965414,6985214,8125892,8145692,8165492,8185292,8325872,8345672,8365472,8385272,8525852,8545652,8565452,8585252,8725832,8745632,8765432,8785232,8925812,8945612,8965412,8985212,121258989,121456989,121654989,121852989,123258789,123456789,123654789,123852789,125258589,125456589,125654589,125852589,127258389,127456389,127654389,127852389,129258189,129456189,129654189,129852189,141258969,141456969,141654969,141852969,143258769,143456769,143654769,143852769,145258569,145456569,145654569,145852569,147258369,147456369,147654369,147852369,149258169,149456169,149654169,149852169,161258949,161456949,161654949,161852949,163258749,163456749,163654749,163852749,165258549,165456549,165654549,165852549,167258349,167456349,167654349,167852349,169258149,169456149,169654149,169852149,181258929,181456929,181654929,181852929,183258729,183456729,183654729,183852729,185258529,185456529,185654529,185852529,187258329,187456329,187654329,187852329,189258129,189456129,189654129,189852129,321258987,321456987,321654987,321852987,323258787,323456787,323654787,323852787,325258587,325456587,325654587,325852587,327258387,327456387,327654387,327852387,329258187,329456187,329654187,329852187,341258967,341456967,341654967,341852967,343258767,343456767,343654767,343852767,345258567,345456567,345654567,345852567,347258367,347456367,347654367,347852367,349258167,349456167,349654167,349852167,361258947,361456947,361654947,361852947,363258747,363456747,363654747,363852747,365258547,365456547,365654547,365852547,367258347,367456347,367654347,367852347,369258147,369456147,369654147,369852147,381258927,381456927,381654927,381852927,383258727,383456727,383654727,383852727,385258527,385456527,385654527,385852527,387258327,387456327,387654327,387852327,389258127,389456127,389654127,389852127,521258985,521456985,521654985,521852985,523258785,523456785,523654785,523852785,525258585,525456585,525654585,525852585,527258385,527456385,527654385.

一些较大的示例: