在等差数列{an},等比数列{bn}中,a1=b1=1,a2=b2,a4=b3≠b4.
(Ⅰ)设Sn为数列{an}的前n项和,求anbn和Sn;
(Ⅱ)设
(n∈N*),Rn=C1+C2+…+Cn,求Rn.
0 102108 102116 102122 102126 102132 102134 102138 102144 102146 102152 102158 102162 102164 102168 102174 102176 102182 102186 102188 102192 102194 102198 102200 102202 102203 102204 102206 102207 102208 102210 102212 102216 102218 102222 102224 102228 102234 102236 102242 102246 102248 102252 102258 102264 102266 102272 102276 102278 102284 102288 102294 102302 266669
(Ⅰ)设Sn为数列{an}的前n项和,求anbn和Sn;
(Ⅱ)设