what are the next 2 numbers in this sequence: 20 , 1 ,18 ,4 ,9 ,1
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9
-20, -14, 28
The next four number in the sequence are... 4,5,5 & 6
21. Add the last 2 numbers to get the next.
That's the Fibonacci sequence! XD They're 21 and 34 if you add up the last two numbers to get the next one.