# New in *MathWorld* -- January
2018

### Thursday January 25, 2018

- Machin-Like Formulas (modified)

### Monday January 22, 2018

- Graph Crossing Number (modified)

### Wednesday January 17, 2018

- Connected Domination Number (modified)
- Domination Number (modified)
- Maximum Leaf Number (modified)

### Wednesday January 10, 2018

- Mersenne Prime (modified)

### Wednesday January 3, 2018

- Integer Sequence Primes (modified)
- Mersenne Prime (modified)
- Prime Number (modified)
- Titanic Prime (modified)

### Monday January 1, 2018

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