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This is something that JKyle1980 (I'm still using the third person to get JKyle1980's name back for JKyle1980) came up with. See if you can come up with the next 5 numbers in the pattern:

0, 2, -1, 4, -3, 8, -5, 12, -7, 16, -13, 18, -19....

Hah! I'm not posting the answer yet.

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22,-21,26,-27,32,-29,38,-33,40,-39,44,-45,52, etc.

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I got this with the first thing I tried.

first, lets list off prime numbers...

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97

Now negate every other one....

2,-3,5,-7,11,-13,17,-19,23,-29,31,-37,41,-43,47,-53,59,-61,67,-71,73,-79,83,-89,97

Now, starting with zero, add cumulatively...

0, 2, -1, 4, -3, 8, -5, 12, -7, 16, -13, 18, -19, 22, -21, 26, -27, 32, -29, 38, -33, ....

Tada...

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22, -21, 26, -27, 32

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All of those are correct. Event Horizon posted an explanation, too.

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