Solution: Let the number of artifacts in the five exhibitions be $ a - 2d, a - d, a, a + d, a + 2d $, forming an arithmetic sequence with common difference $ d $. The total number of artifacts is:

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**Discover the Hidden Logic Behind Exhibition Planning: Why Arithmetic Sequences Are Informing Cultural Displays** Curious about how institutions manage exhibition spaces to balance storytelling, flow, and visitor experience? What if the number of artifacts displayed in each exhibition follows a deliberate, predictable pattern—like a well-crafted mathematical sequence? Many cultural and educational spaces across the U.S. are adopting structured frameworks to organize their artifact displays, and one such approach uses an arithmetic sequence to guide exhibit distribution. **Why This Pattern Is Trending in U.S. Museum Curation** Across museums and historical sites, curators are increasingly favoring balanced, predictable layouts—especially when integrating digital and physical elements. The arithmetic sequence, where artifact counts follow $ a - 2d, a - d, a, a + d, a + 2d $, enables planners to create visual rhythm and narrative progression without overwhelming audiences. This pattern supports intentional visitor pathway design, making exploration feel natural and immersive.