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A335413
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Irregular table read by rows: T(n,k) = number of k-sided polygons formed by n-secting the angles of an equilateral triangle for k >= 3.
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6
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1, 6, 12, 3, 3, 1, 24, 6, 36, 9, 9, 7, 48, 24, 6, 72, 21, 15, 19, 84, 48, 12, 6, 108, 51, 33, 25, 126, 90, 12, 6, 168, 69, 51, 43, 180, 120, 48, 18, 216, 123, 81, 49, 240, 180, 54, 36, 288, 171, 99, 73, 312, 234, 84, 48, 372, 225, 117, 103, 396, 288, 126, 60
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listen;
history;
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Table begins:
1;
6;
12, 3, 3, 1;
24, 6;
36, 9, 9, 7;
48, 24, 6;
72, 21, 15, 19;
84, 48, 12, 6;
108, 51, 33, 25;
126, 90, 12, 6;
168, 69, 51, 43;
180, 120, 48, 18;
216, 123, 81, 49;
240, 180, 54, 36;
288, 171, 99, 73;
312, 234, 84, 48;
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CROSSREFS
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KEYWORD
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nonn,tabf
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AUTHOR
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STATUS
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approved
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