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n k k ^2二进制k二进制k ^2
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0 0 0 0 0
1 5 25 101 11001
2 11 121 1011 1111001
3 21 441 10101 110111001
4 45 2025 101101 11111101001
5 75 5625 1001011 1010111111001
6 217 47089 11011001 1011011111110001
7 331 109561 101001011 11010101111111001
8 181 32761 10110101 111111111111001
9 789 622521 1100010101 10010111111110111001
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