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A365997 Number of free polyominoids with n cells, allowing flat corner-connections and any edge-connections. 4
1, 3, 14, 129, 1555, 24144 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Pontus von Brömssen, Illustration for sizes 1..3.
Wikipedia, Polyominoid.
CROSSREFS
See A365995 for further details and a table of related sequences.
Cf. A365998 (fixed).
22nd row of A366766.
Sequence in context: A330625 A061029 A096657 * A126933 A073550 A319361
KEYWORD
nonn,hard,more
AUTHOR
STATUS
approved

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Last modified May 28 04:02 EDT 2024. Contains 372900 sequences. (Running on oeis4.)