MathCastle
Proof Writing & Problem SolvingSuperchallenge

Proof Writing & Problem Solving · Superchallenge problem

For how many ordered pairs (m,n)(m, n) of integers with 1≤m≤101 \le m \le 10 and 1≤n≤101 \le n \le 10 can an m×nm \times n rectangle be tiled completely by 1×41 \times 4 strips (each strip covering four cells in a row or four cells in a column)?

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