A365997 Number of free polyominoids with n cells, allowing flat corner-connections and any edge-connections.

1, 3, 14, 129, 1555, 24144

Offset: 1

Author

Pontus von Brömssen, Sep 26 2023

Keywords

• nonn
• hard
• more

Links

• Pontus von Brömssen, Illustration for sizes 1..3.
• Wikipedia, Polyominoid.
• Index entries for sequences related to polyominoes.

Crossrefs

See A365995 for further details and a table of related sequences.

Cf. A365998 (fixed).

22nd row of A366766.