# 369 Octominoes

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## Theorem

There exist $369$ distinct free octominoes, $6$ of which have a hole:

## Proof

## Sources

- 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): $35$ - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): $35$