Question 105
Find $A_{2024}$, where
$$
A_n = 1 \cdot 2 + 3 \cdot 4 + 5 \cdot 8 + \dots + (2n-1) \cdot 2^n.
$$
$$
A_n = 1 \cdot 2 + 3 \cdot 4 + 5 \cdot 8 + \dots + (2n-1) \cdot 2^n.
$$
MathNet 2024-part-01 — 168 problems (EN–VI) Question 105
Math Olympiad Vault · MathNet 2024-part-01 — 168 problems (EN–VI)