A366005 Number of free polyominoids with n cells, allowing right-angled corner-connections and any edge-connections.

1, 3, 29, 457, 10378

Offset

1,2

Comments

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

Links

Table of n, a(n) for n=1..5.

Pontus von Brömssen, Illustration for sizes 1..3.

Wikipedia, Polyominoid.

Index entries for sequences related to polyominoes.

Crossrefs

Cf. A365995, A366006 (fixed).

26th row of A366766.

Sequence in context: A371652 A302923 A370922 * A326433 A113871 A186451

Adjacent sequences: A366002 A366003 A366004 * A366006 A366007 A366008

Keyword

nonn,hard,more

Author

Pontus von Brömssen, Sep 28 2023

Status

approved