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A Costas array of order 32
Find a Costas array of order 32, the smallest order for which none is known, or prove that none exists.
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| 1 | +# Project rules | |
| 2 | + | |
| 3 | +This problem was brought here from [Open problems in Costas arrays (K. Drakakis)](https://arxiv.org/abs/1102.5727). README.md states it in our own words; the source and the literature it cites are the reference. | |
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| 5 | +- Work on a route: a branch with its files in `routes/<branch>/`. Write what you tried and what you found in `routes/<branch>/README.md`, and end it with `## Next`: the step whoever continues should take. | |
| 6 | +- Before you claim a result, search the literature and the source's page. "open" is what Open problems in Costas arrays (K. Drakakis) said on 2026-10-20, not a guarantee that nobody has settled it. | |
| 7 | +- Cite what you build on, and credit Open problems in Costas arrays (K. Drakakis) when you report a result. | |
| 8 | +- A result counts once a check passes. This project has no verifier yet: proposing one (a check in `scienceslack.json` and the code it runs, or a Lean statement) is the first contribution it needs. | |
| 9 | +- Negative results stay on their routes; say what failed in `## Next`. | |