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A089456
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Number of n-celled polyominoes with exactly 4 holes.
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4
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 179, 2509, 25609, 214932, 1578984, 10536260, 65411645, 383981499, 2156114468
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,17
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LINKS
| Tomas Oliveira e Silva, Animal enumerations on the {4,4} Euclidean tiling
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CROSSREFS
| Cf. A001419, A057418, A089454, A089455, A089457, A089458.
Sequence in context: A000839 A001596 A159326 * A108552 A060593 A130775
Adjacent sequences: A089453 A089454 A089455 * A089457 A089458 A089459
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KEYWORD
| hard,nonn
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AUTHOR
| Joseph Myers (jsm(AT)polyomino.org.uk), Nov 04 2003
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