Question
Consider the sequence: 4, 9, 11, 20, 18, 33, ? I: Terms at odd positions (1st, 3rd, 5th, 7th, …) form an arithmetic progression. II: Terms at even positions (2nd, 4th, 6th, 8th, …) form a sequence whose consecutive differences are 11, 13, 15, 17, … respectively. What is the 7th term of the sequence?
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