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A137760
Distinct numbers in writing first numerator and then denominator (left to right) of Leibniz's harmonic-like triangle.
9
1, 2, 3, 5, 6, 4, 7, 12, 9, 20, 31, 30, 11, 49, 60, 13, 42, 71, 105, 209, 140, 8, 15, 56, 97, 168, 351, 280, 17, 72, 127, 252, 545, 504, 1471, 630, 10, 19, 90, 161, 360, 799, 840, 2561, 1260, 21, 110, 199, 495, 1121, 1320, 4159, 2310, 10625, 2772
OFFSET
1,2
EXAMPLE
1/1; --> 1
1/2, 1/2; --> 2
1/3, 5/6, 1/3; --> 3 5 6
1/4, 7/12, 7/12, 1/4; --> ...
1/5, 9/20, 31/30, 9/20, 1/5;
KEYWORD
frac,nonn,tabf,less
AUTHOR
Mohammad K. Azarian, Feb 11 2008
STATUS
approved