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A151521
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Number of 2-sided strip polytans with n cells.
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1
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1, 3, 4, 13, 25, 72, 166, 450, 1124, 2973, 7603, 19865, 51199, 132982, 343290, 888309, 2292325, 5918742, 15258937, 39329418
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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LINKS
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Eric Weisstein's World of Mathematics, Polytan
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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