qp
by hjm777 @ 2024-08-01 17:32:21
@[Ekin123](/user/1235038) 显然不是唯一解啊。。。
by Aleph_Drawer @ 2024-08-01 17:34:16
qp（引以为戒
by wangtairan114 @ 2024-08-01 17:43:59
那道题：f[i] = f[i-1] + 2 * i - 1
by duanzx @ 2024-08-01 17:50:34
@[duanzx](/user/1008172) 错了
f[i] = f[i-1] + 2 * i - 3
by duanzx @ 2024-08-01 17:52:26
qp
by Jiang2012 @ 2024-08-01 18:01:22
qp
by huangmingyi @ 2024-08-01 18:15:47
qp
by LXY_elven @ 2024-08-01 18:19:07
f[i]=2*f[i-1]+f[i-2]
by 987654321logo @ 2024-08-01 18:20:34
> 现在有一个序列，前 $100$ 项分别为 $0,0,0,1,1,2,4,5,8,9,12,16,19,22,28,29,32,39,41,46,54,57,64,71,79,86,96,101,112,117,128,135,150,151,163,167,177,192,200,217,226,234,249,265,270,278,300,305,317,340,344,358,381,391,401,418,438,453,479,484,501,520,532,561,575,587,602,628,634,658,685,709,716,740,752,778,805,827,841,870,894,919,935,962,986,1021,1035,1064,1092,1124,1149,1186,1202,1235,1261,1302,1314,1339,1385,1390$，问第 $1000$ 项是多少。
by 035966_L3 @ 2024-08-01 18:24:06