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Search: id:A001419
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| A001419 |
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Number of n-celled polyominoes with holes.
(Formerly M4226 N1767)
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+0
9
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| 0, 0, 0, 0, 0, 0, 1, 6, 37, 195, 979, 4663, 21474, 96496, 425449, 1849252, 7946380, 33840946, 143060339, 601165888, 2513617990, 10466220315, 43425174374
(list; graph; listen)
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OFFSET
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1,8
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REFERENCES
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S. W. Golomb, Polyominoes. Scribner's, NY, 1965; second edition ( Polyominoes: Puzzles, Packings, Problems and Patterns) Princeton Univ. Press, 1994.
Joseph S. Madachy, "Pentominoes - Some Solved and Unsolved Problems", J. Rec. Math., 2 (1969), 181-188.
T. R. Parkin, L. J. Lander and D. R. Parkin, ``Polyomino enumeration results,'' SIAM Fall Meeting, Santa Barbara, California, 1967.
R. C. Read, Contributions to the cell growth problem, Canad. J. Math., 14 (1962), 1-20.
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LINKS
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Joseph Myers, Polyomino tiling
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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CROSSREFS
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Cf. A000104, A000105.
Adjacent sequences: A001416 A001417 A001418 this_sequence A001420 A001421 A001422
Sequence in context: A056338 A056328 A057418 this_sequence A081152 A033116 A033124
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KEYWORD
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nonn,hard
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Further terms may be obtained from A000105-A000104.
More terms from Joseph Myers (jsm(AT)polyomino.org.uk), May 05 2002
More terms from Joseph Myers (jsm(AT)polyomino.org.uk), Nov 04 2003
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