Find the odd one out
1,5,14,30,50,55,91
the sequence is as follows:
$$1,1+2^{2}=5,5+3^{2}=14,14+4^{2}=30,30+5^{2}=55,55+6^{2}=91$$ and so on
here 50 does not fit the sequence.Therefore, 50 is the odd one out.
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