369 Octominoes
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This theorem requires a proof.
Work to be done yet to establish method of creation
You can help $\mathsf{Pr} \infty \mathsf{fWiki}$ by crafting such a proof.
Theorem
There exist $369$ distinct octominoes, up to reflection, $6$ of which have a hole:
Proof
Work to be done yet to establish method of creation
You can help $\mathsf{Pr} \infty \mathsf{fWiki}$ by crafting such a proof.
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Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $35$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $35$
