各位会员:
“数学之家”门户网站【盛世三周年】所有活动已于今日圆满结束,所有奖励已发放到位。在此,我们再次对本次活动作出过贡献的会员表示感谢!让我们相约四周年,精彩将不断延续!
【盛世三周年】“数学之家”T楼活动:
通项公式:$a_n=2n^2+2n+4$($n \in N^*$)
奖励楼层:
8,16,28,44,64,88,116,148,184,224,229,268,316,368,424,484,548,616,688,764,844,928,1016,1108,1204,1304,1408,1516,1628,1744,1864,1988,2116,2248,2384,2524,2668,2816,2968,3124,3284,3448,3616,3788,3964,4144,4328,4516,4708,4904,5104
2011.8.1 |