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

1, 3, 14, 129, 1555, 24144

Offset

1,2

Links

Table of n, a(n) for n=1..6.

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.

Sequence in context: A330625 A061029 A096657 * A126933 A073550 A319361

Adjacent sequences: A365994 A365995 A365996 * A365998 A365999 A366000

Keyword

nonn,hard,more

Author

Pontus von Brömssen, Sep 26 2023

Status

approved