2 ,3 , 6 ,8, 31 __?

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1 Answer

The formula (25n4-162n3+335n2-174n+48)/24 gives each term and predicts the next one is 122.

The series continues 2, 3, 6, 8, 31, 122, 353, 821, 1648, ...

This is an unlikely solution, but it does work!

by Top Rated User (1.2m points)

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