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Search: id:A121197
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| A121197 |
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Consider the tiling of the plane with squares of two different sizes as in Fig. 2.4.2(g) of Gruenbaum and Shephard, p. 74. a(n) is the number of connected figures that can be formed on this tiling, from any n squares. |
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+0
3
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| 2, 2, 8, 34, 158, 777, 4006, 21224, 114348, 624222, 3441050, 19121530
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The Zucca web site calls these figures "n-DifferentSquares".
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REFERENCES
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Branko Gruenbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987.
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LINKS
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Livio Zucca, PolyMultiForms
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CROSSREFS
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Cf. A121195, A121196, A121198.
Sequence in context: A053047 A076143 A057132 this_sequence A009543 A102647 A060224
Adjacent sequences: A121194 A121195 A121196 this_sequence A121198 A121199 A121200
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KEYWORD
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nonn,nice,more
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AUTHOR
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njas, Aug 17 2006
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EXTENSIONS
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More terms from Don Reble (djr(AT)nk.ca), Aug 17 2007
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