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A363199
Number of free tree-like polycubes of size n, identifying rotations but not reflections.
1
1, 1, 2, 7, 27, 138, 822, 5154, 33880, 227495, 1554266, 10749089, 75106906
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Tree-like means that the graph connecting midpoints of adjacent cubes is a tree.
Additionally identifying reflections gives A304196.
The fixed version is A118356.
LINKS
Table of n, a(n) for n=1..13.
CROSSREFS
Sequence in context: A058800 A357901 A342056 * A367594 A293031 A255487
Adjacent sequences: A363196 A363197 A363198 * A363200 A363201 A363202
KEYWORD
nonn,hard,more
AUTHOR
Joerg Arndt and Márk Péter Légrádi, May 21 2023
EXTENSIONS
a(12) and a(13) from Joerg Arndt, Dec 11 2023
STATUS
approved

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Last modified April 12 21:33 EDT 2026. Contains 394621 sequences.
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