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이 번호는 Loeschian입니까?
양의 정수 k는 다음과 같은 경우 Loeschian 수입니다. k다음과 같이 표현 될 수 i*i + j*j + i*j대한 i, j정수. 예를 들어, 첫 번째 양의 Loeschian 수는 다음과 같습니다. 1( i=1, j=0); 3( i=j=1); 4( i=2, j=0); 7( i=2, j=1); 9( i=-3, j=3); ... 그 참고 i, j주어진가 k고유하지 않습니다. …
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