A137760 - cp's OEIS frontend

A137760 Distinct numbers in writing first numerator and then denominator (left to right) of Leibniz's harmonic-like triangle.

n	a(n)
1	1
2	2
3	3
4	5
5	6
6	4
7	7
8	12
9	9
10	20
11	31
12	30
13	11
14	49
15	60
16	13
17	42
18	71
19	105
20	209
21	140
22	8
23	15
24	56
25	97
26	168
27	351
28	280
29	17
30	72
31	127
32	252
33	545
34	504
35	1471
36	630
37	10
38	19
39	90
40	161
41	360
42	799
43	840
44	2561
45	1260
46	21
47	110
48	199
49	495
50	1121
51	1320
52	4159
53	2310
54	10625
55	2772

[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]

cp's OEIS Frontend

A137760 Distinct numbers in writing first numerator and then denominator (left to right) of Leibniz's harmonic-like triangle.

Table of values

List of values