6.观察下列各式:$a+b=1, ~ a^{2^{2}}+b^{2}=3, ~ a^{3}+b^{3}=4, ~ a^{4}+b^{4}=7, a^{5}+b^{5}=11, \cdots$ ,则 $a^{10}+b^{10}=$
参考答案:C
2012_退役省自主命题 (2012·理)
6.观察下列各式:$a+b=1, ~ a^{2^{2}}+b^{2}=3, ~ a^{3}+b^{3}=4, ~ a^{4}+b^{4}=7, a^{5}+b^{5}=11, \cdots$ ,则 $a^{10}+b^{10}=$