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A056755
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Number of n-celled polyominoes, where the cells are 1 X 2 rectangles with some of the edges of length 2 replaced by curved arcs that either sag inwards or bulge outwards.
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2
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OFFSET
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1,1
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COMMENTS
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The rules that govern which edges are changed are not completely clear, so two examples drawn by M. Vicher have been included.
Probably an erroneous version of A121194.
Row 11 of polyforms table, puzzle 1 (See link). - Omar E. Pol, Feb 22 2011.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,obsc
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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