Question: A science administrator reviews funding cycles where each grant is issued every 7 years starting in year 3. What is the sum of all years (positive integers) in which a grant is issued, between year 1 and year 100?

Mon, 04 May 2026 18:54:54 +0000

**The Hidden Pattern Behind Federal Research Funding—and Why It Matters** Curious about the rhythm of federal research support? In an era where innovation drives economic progress, understanding long-term funding patterns reveals critical insights into scientific stability and strategic investment. A key question often arises: How often and in which years do major research grants flow to institutions? One compelling pattern centers on grants issued every 7 years—starting in year 3—perfectly aligning with periodic strategic reviews. But what are the exact years where funding positions these critical investments between 1 and 100? And why might this repeat cycle matter beyond the spreadsheet? **Why This Funding Model Is Gaining Attention in the U.S.** Government research funding cycles influence innovation ecosystems, workforce development, and long-term competitiveness. Recent shifts toward accountability, sustainability, and large-scale scientific planning have sparked interest in predictable, cyclical grant distribution models. While most agencies operate on varying schedules, a relatively rare structured rhythm—issuing substantial grants in years congruent to 3 modulo 7—speaks to intentional financial rhythm. Experts note this predictability supports better budget forecasting for universities and labs, enabling stronger proposal planning and sustained research infrastructure. Amid growing pressure to maximize return on public R&D investment, understanding such patterns offers clarity in an otherwise chaotic funding landscape. **How the Grants Are Distributed: A Clear Mathematical Framework** The funding cycle begins in year 3 and advances every 7 years: year 3, 10, 17, 24, 31, 38, 45, 52, 59, 66, 73, 80, and 87—within the 1–100 range. This sequence follows a simple arithmetic progression: starting at 3 with a common difference of 7. To calculate the full sum, the formula for the sum of an arithmetic series applies: Sum = (n/2)(first term + last term) Here, n = 13 terms, first term = 3, last term = 87. So: Sum = (13/2)(3 + 87) = (13/2)(90) = 13 × 45 = 585.