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A049429
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Triangle T(n,d) = number of distinct d-dimensional polyominoes (or polycubes) with n cells (n >= 2,d>=1).
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9
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1, 1, 1, 1, 4, 2, 1, 11, 11, 3, 1, 34, 77, 35, 6, 1, 107, 499, 412, 104, 11, 1, 368, 3442, 4888, 2009, 319, 23, 1, 1284, 24128, 57122, 36585, 8869, 951, 47
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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2,5
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REFERENCES
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Dan Hoey, Bill Gosper and Rich Schroeppel, Discussions in Math-Fun Mailing list, circa Jul 13 1999.
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LINKS
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Table of n, a(n) for n=2..37.
R. C. Schroeppel, A few mathematical experiments
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EXAMPLE
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1; 1,1; 1,4,2; 1,11,11,3; ...
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CROSSREFS
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Cf. A049430. Row sums give A005519. Rows give A006765-A006768.
Sequence in context: A021010 A193607 A075397 * A183158 A174005 A152818
Adjacent sequences: A049426 A049427 A049428 * A049430 A049431 A049432
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KEYWORD
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nonn,nice,tabl,hard
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AUTHOR
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Richard Schroeppel
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STATUS
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approved
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