A385382 Number of polyominoes, i.e., connected nonempty subsets of square cells (or vertices), of the n X n flat torus, up to cyclic shifts and reflections of rows and columns.

1, 5, 28, 801, 129550

Offset: 1

Author

Pontus von Brömssen, Jun 27 2025

Keywords

• nonn
• more

Links

• Pontus von Brömssen, Illustration for n = 3.

Crossrefs

Main diagonal of A385381.

Row sums of A385383.

Cf. A385384 (interchange of rows and columns of the torus allowed), A385387 (edge subsets).