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A137766 Elements to the right of the central element in writing first the numerator and then the denominator (left to right) of Leibniz's harmonic-like triangle. 3
1, 2, 1, 3, 7, 12, 1, 4, 9, 20, 1, 5, 49, 60, 11, 30, 1, 6, 71, 105, 13, 42, 1, 7, 351, 280, 97, 168, 15, 56, 1, 8, 545, 504, 127, 252, 17, 72, 1, 9, 2561, 1260, 799, 840, 161, 360, 19, 90, 1, 10, 4159, 2310, 1121, 1320, 199, 495, 21, 110, 1, 11 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
EXAMPLE
1/1; -->
1/2, 1/2; --> 1 2
1/3, 5/6, 1/3; --> 1 3
1/4, 7/12, 7/12, 1/4; --> ...
1/5, 9/20, 31/30, 9/20, 1/5;
CROSSREFS
Cf. A137752.
Sequence in context: A024404 A077173 A063509 * A294620 A010758 A259419
KEYWORD
nonn,tabf,frac,less
AUTHOR
Mohammad K. Azarian, Feb 13 2008
STATUS
approved

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Last modified July 22 10:14 EDT 2024. Contains 374490 sequences. (Running on oeis4.)