Finish the Sequence - High School Math Challenge Puzzle

My "High School Math Challenges Puzzles" are designed as a supplementary learning opportunity for a high school mathematics classroom. Got a student who is always finishing early? Have a student who wants more challenge? Give them a puzzle to occupy their time and hopefully challenge their brains too.

For more Challenge Puzzles made by Mr. Miller, click one of the links below:

Gerrymandering - Can You Rig the School Election?

Assemble the Puzzle Using Transformations - Fit All the Pieces Together

I'm Thinking of a Number 1 to 100 - Number Sense Puzzle

I'm Thinking of a Number 1 to 1000 - Number Sense Puzzle

Finish the Sequence - Identify Patterns and Fill-In Missing Steps

Trusses and Angles - Angle Theorems Puzzle

Truncation Station - Find the Volume of Truncated 3D Figures

Operation Combination - Can you Solve The Number Puzzle? Version A

Operation Combination - Can You Solve The Number Puzzle? Version B