被4整除的自然数是倍偶。不被4整除的自然数是奇偶。
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奇偶:2[T-1]*30+[2 6 10 14 18 22 26 30]...[2T-1]*30+[0 4 8 12 16 20 24 28]
倍偶:[2T-1]*30+[2 6 10 14 18 22 26 30]...2[T-1]*30+[0 4 8 12 16 20 24 28]
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I
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奇偶:2[T-1]*30+[2 6 10 14 18 22 26 30]...[2T-1]*30+[0 4 8 12 16 20 24 28]
倍偶:[2T-1]*30+[2 6 10 14 18 22 26 30]...2[T-1]*30+[0 4 8 12 16 20 24 28]
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I










