12/08/11 18:10:32.15
>>98
n=2のとき
3^2 + 4^2 + 5^2 + 6^2 = (1^2 + 2^2 + 3^2 + 4^2 + 5^2 + 6^2) - (1^2 + 2^2)
12/08/11 18:10:32.15
>>98
n=2のとき
3^2 + 4^2 + 5^2 + 6^2 = (1^2 + 2^2 + 3^2 + 4^2 + 5^2 + 6^2) - (1^2 + 2^2)
12/08/11 18:10:32.15
>>98
n=2のとき
3^2 + 4^2 + 5^2 + 6^2 = (1^2 + 2^2 + 3^2 + 4^2 + 5^2 + 6^2) - (1^2 + 2^2)