A137765 Nontrivial numbers of the elements to the right of the central elements in writing first the denominator and then the numerator(left to right) of Leibniz's harmonic-like triangle. That is, the nontrivial elements of A137764.
2, 3, 12, 7, 4, 20, 9, 5, 60, 49, 30, 11, 6, 105, 71, 42, 13, 7, 280, 351, 168, 97, 56, 15, 8, 504, 545, 252, 127, 72, 17, 9, 1260, 2561, 840, 799, 360, 161, 90, 19, 10, 2310, 4159, 1320, 1121, 495, 199, 110, 21, 11
Offset: 1
Examples
1/1; --> 1/2, 1/2; --> 2 1/3, 5/6, 1/3; --> 3 1/4, 7/12, 7/12, 1/4; --> ... 1/5, 9/20, 31/30, 9/20, 1/5;