PLEASE HELP ME! I need to know the rule for this number pattern: 3,9,18,30,45

I know I have asked this but I need it before school tomorrow. Please answer and tell me the rule for this number pattern!!!

3,9,18,30,45. I really really need this FAST!! Please include your email adress when you answer so i can make sure I have this right frown

in order of operations by

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1 Answer

Tn= 3n squared - 3n +3
by

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