【摘要】 “第四数问题”是容易被忽视但却有着深刻内涵的趣味数学问题,它涉及了数学上的递推式、通项等基本概念。本文介绍该问题的雏形与剖析,问题的引深与初步结果,供广大数学爱好者参考。更多还原

【Abstract】 The number four problem" is an interesting mathematical problem that is ignored easily but has deep connotation. It touches upon recurrence formula and general term of the fundamental conception of mathematics. The article introduces embryonic form and dissect of the problem, extension and initial results of the problem and offers reference to numerous mathematics fan.更多还原