Braingle Lite



1, 3, 6, 55, 66...

Category:Series
Submitted By:fishmed
Fun:*** (2.2)
Difficulty:**** (3.12)



What are the next three numbers in this series?

1, 3, 6, 55, 66, 171, 595, 666, 3003, 5995, ?, ?, ?

Hint:

3-sides

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