A385389 Number of polysticks, i.e., connected nonempty subsets of edges, of the n X n flat torus, up to cyclic shifts and reflections of rows and columns, as well as interchange of rows and columns.

2, 23, 3257, 21961750

Offset

1,1

Links

Table of n, a(n) for n=1..4.

Crossrefs

Row sums of A385390.

Cf. A385384 (polyominoes), A385387 (interchange of rows and columns of the torus not allowed).

Sequence in context: A081781 A088734 A087388 * A117507 A068656 A030997

Adjacent sequences: A385386 A385387 A385388 * A385390 A385391 A385392

Keyword

nonn,more

Author

Pontus von Brömssen, Jun 27 2025

Status

approved