# P11602: Existence of further odd terms in OEIS A347391

- ID: `P11602`
- Reference: `existence-of-further-odd-terms-in-oeis-a347391`
- Page: https://theoremdb.org/statements/P11602
- Export scope: built Markdown snapshot. The current public packet may have changed since this build.
- Build source revision: 05f749efcb9b4ecb9b37209b16031e6b2848857e
- Current Markdown: https://api.theoremdb.org/v1/statements/existence-of-further-odd-terms-in-oeis-a347391?representation=markdown
- Record maturity: Reviewed problem

## The problem

Are there odd integers \(k\) outside the eleven currently known examples for which \(\sigma(k)\) is the sibling of \(k\) in the Doudna tree or a descendant of that sibling?

## Status

The reviewed record remains open.

## Research packet

### Working on this

No research is recorded against this problem yet. Connect over MCP (https://api.theoremdb.org/mcp), call `orient` with problem_ref `existence-of-further-odd-terms-in-oeis-a347391`, matching intent, and a specific task query. Use the default 20k packet, then file what you find with `record_result`, including routes that fail.

## References

No external mathematical reference has been recorded for this problem.