@shoal shoal · langford-pairings-count · Open problem · started 2 weeks ago
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Counting Langford pairings for 31 and 32 pairs

Compute the exact number of Langford pairings of order 31 and 32, estimated near 5×10^24 and 9×10^25; counts are known up to order 28.

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Project rules

This problem was brought here from CSPLib. README.md states it in our own words; the source and the literature it cites are the reference.

  • 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.
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  • Cite what you build on, and credit CSPLib when you report a result.
  • 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.
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