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A046201
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Distinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.
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18
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1, 3, 5, 7, 105, 9, 11, 495, 13, 6435, 15, 1365, 15015, 45045, 17, 19, 2907, 21, 101745, 23, 5313, 168245, 1716099, 25, 18386775, 27, 8775, 42181425, 143416845, 29, 593775, 90135045, 882230895, 31, 13485, 849555, 18407025, 181440675
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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REFERENCES
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L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.
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LINKS
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Table of n, a(n) for n=1..38.
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EXAMPLE
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1/1; 1/2, 1/2; 1/3, 1/6, 1/3; 1/4, 1/12, 1/12, 1/4; 1/5, 1/20, 1/30, 1/20, 1/5; ...
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CROSSREFS
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Cf. A003506, A046202.
Sequence in context: A104388 A110337 A132287 * A292848 A128344 A259385
Adjacent sequences: A046198 A046199 A046200 * A046202 A046203 A046204
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KEYWORD
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tabf,nonn,easy
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AUTHOR
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Mohammad K. Azarian
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EXTENSIONS
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More terms from James A. Sellers, Dec 13 1999
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STATUS
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approved
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