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A046200
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Odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.
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0
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1, 3, 3, 5, 5, 7, 105, 105, 7, 9, 9, 11, 495, 495, 11, 13, 6435, 6435, 13, 15, 1365, 15015, 45045, 45045, 15015, 1365, 15, 17, 17, 19, 2907, 2907, 19, 21, 101745, 101745, 21, 23, 5313, 168245, 1716099, 1716099, 168245, 5313, 23, 25, 18386775, 18386775, 25
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 83, Problem 25.
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EXAMPLE
| 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
| Cf. A003506.
Sequence in context: A098508 A051593 A142712 * A063281 A117772 A026924
Adjacent sequences: A046197 A046198 A046199 * A046201 A046202 A046203
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KEYWORD
| tabl,nonn,easy
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AUTHOR
| Mohammad K. Azarian (ma3(AT)evansville.edu)
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EXTENSIONS
| More terms from James A. Sellers (sellersj(AT)math.psu.edu), Dec 13 1999
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