A361526 - OEIS

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A361526

Number of ways of dividing an n X 4 rectangle into integer-sided rectangles, up to rotations and reflections.

%I #8 Mar 19 2023 08:29:16

%S 1,6,61,892,9235,406653,9252097,211703640

%N Number of ways of dividing an n X 4 rectangle into integer-sided rectangles, up to rotations and reflections.

%F a(n) >= A220297(n)/4 for n != 4.

%F a(n) ~ A220297(n)/4.

%Y Fourth column of A361523.

%Y Cf. A220297 (rotations and reflections are considered distinct), A359020 (square pieces).

%K nonn,more

%O 0,2

%A _Pontus von Brömssen_, Mar 15 2023