What's the rule between sequence 1,2,0,3, - 4,4?

What's the rule between sequence 1,2,0,3, - 4,4?

Is it a test topic?!
Even terms are equal,
The difference of odd items is: 0-1 = - 1, - 4-0 = - 4,
If you don't know what the option is, the odd items may be second-order isochromatic, and the tolerance is - 3;
The difference may be - n ^ 2

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