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A120102
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Number of polyominoes consisting of 8 regular unit n-gons.
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8
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66, 369, 2812, 1448, 2876, 10102, 34838, 73675, 181127, 131801, 185297, 352375, 725869, 1180526, 2104485, 1694978, 2123088, 3291481, 5402087, 7739008, 11832175, 10079003, 11917261, 16624712, 24389611, 32317393, 45260884
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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REFERENCES
| Matthias Koch and Sascha Kurz, Enumeration of generalized polyominoes, preprint, http://de.arXiv.org/abs/math.CO/0605144
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EXAMPLE
| a(3)=66 because there are 66 polyiamonds consisting of 8 triangles and a(4)=369 because there are 369 polyominoes consisting of 8 squares.
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CROSSREFS
| Cf. A000577, A000104, A000228, A103465, A103466, A103467, A103468, A103469, A103470, A103471, A103472, A103473, A103465, A120103, A120104.
Sequence in context: A046393 A117306 A158070 * A084027 A063249 A106212
Adjacent sequences: A120099 A120100 A120101 * A120103 A120104 A120105
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KEYWORD
| nonn
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AUTHOR
| Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jun 09 2006
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