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A333018 Number of free heptagonal polyforms with n cells on the heptagonal tiling of the hyperbolic plane. 1
1, 1, 1, 3, 10, 44, 249, 1513, 9992, 68305, 480748, 3450793, 25186583 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
COMMENTS
The heptagonal tiling is represented by Schläfli symbol {7,3}.
This sequence is to A259352 what A000228 is to A108070.
This sequence is computed from via program by Christian Sievers in the Code Golf Stack Exchange link.
LINKS
Wikipedia, Polyform
PROG
Several programs are available via the Code Golf link.
CROSSREFS
Analogs with different Schläfli symbols are A000105 ({4,4}), A000207 ({3,oo}), A000228 ({6,3}), A000577 ({3,6}), A005036 ({4,oo}), A119611 ({4,5}), A330659 ({3,7}), and A332930 ({4,6}).
Sequence in context: A240172 A167995 A000608 * A259352 A205803 A329258
KEYWORD
nonn,more,hard
AUTHOR
Peter Kagey, Mar 05 2020
EXTENSIONS
a(9)-a(12) from Ed Wynn, Feb 14 2021
STATUS
approved

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)