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A173408
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The number of staircase polygons with a staircase hole counted by the outer half-perimeter only.
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0
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1, 14, 127, 958, 6601, 43698, 287507, 1929706, 13486531, 99571340, 782211324, 6539607380, 57901173453, 538952965192, 5234230025617, 52686138293574, 546666444601661, 5821956732601772, 63426558436432195, 704956833621381378
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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6,2
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COMMENTS
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The generating function is the solution to a Fuchsian ODE of order 11.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Iwan Jensen (I.Jensen(AT)ms.unimelb.edu.au), Feb 17 2010
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STATUS
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approved
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