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A361526
Number of ways of dividing an n X 4 rectangle into integer-sided rectangles, up to rotations and reflections.
1
1, 6, 61, 892, 9235, 406653, 9252097, 211703640
OFFSET
0,2
FORMULA
a(n) >= A220297(n)/4 for n != 4.
a(n) ~ A220297(n)/4.
CROSSREFS
Fourth column of A361523.
Cf. A220297 (rotations and reflections are considered distinct), A359020 (square pieces).
Sequence in context: A049120 A346983 A271841 * A056546 A127695 A144343
KEYWORD
nonn,more
AUTHOR
STATUS
approved