摘要：
Problem DescriptionThe arithmetic sequence, 1487, 4817, 8147, in which each of the terms increases by 3330, is unusual in two ways: (i) each of the three terms are prime, and, (ii) each of the 4-digit numbers are permutations of one another.There are no arithmetic sequences made up of three 1-, 2-, 阅读全文
posted @ 2012-06-19 17:10
QuarkZ
阅读(327)
评论(0)
推荐(0)
浙公网安备 33010602011771号