A385389 - cp's OEIS frontend

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.

%I A385389 #5 Jun 29 2025 11:07:51
%S A385389 2,23,3257,21961750
%N 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.
%Y A385389 Row sums of A385390.
%Y A385389 Cf. A385384 (polyominoes), A385387 (interchange of rows and columns of the torus not allowed).
%K A385389 nonn,more
%O A385389 1,1
%A A385389 _Pontus von Brömssen_, Jun 27 2025

cp's OEIS Frontend

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.