A046208 - cp's OEIS frontend

A046208 In Leibniz's Harmonic Triangle, write the numerator first and then the denominator of each element to the right of the central elements.

n	a(n)
1	1
2	2
3	1
4	3
5	1
6	12
7	1
8	4
9	1
10	20
11	1
12	5
13	1
14	60
15	1
16	30
17	1
18	6
19	1
20	105
21	1
22	42
23	1
24	7
25	1
26	280
27	1
28	168
29	1
30	56
31	1
32	8
33	1
34	504
35	1
36	252
37	1
38	72
39	1
40	9
41	1
42	1260
43	1
44	840
45	1
46	360
47	1
48	90
49	1
50	10
51	1
52	2310
53	1
54	1320
55	1
56	495
57	1
58	110
59	1
60	11
61	1
62	5544
63	1
64	3960
65	1
66	1980
67	1
68	660
69	1
70	132
71	1
72	12
73	1
74	10296
75	1

[1, 2, 1, 3, 1, 12, 1, 4, 1, 20, 1, 5, 1, 60, 1, 30, 1, 6, 1, 105, 1, 42, 1, 7, 1, 280, 1, 168, 1, 56, 1, 8, 1, 504, 1, 252, 1, 72, 1, 9, 1, 1260, 1, 840, 1, 360, 1, 90, 1, 10, 1, 2310, 1, 1320, 1, 495, 1, 110, 1, 11, 1, 5544, 1, 3960, 1, 1980, 1, 660, 1, 132, 1, 12, 1, 10296, 1]

cp's OEIS Frontend

A046208 In Leibniz's Harmonic Triangle, write the numerator first and then the denominator of each element to the right of the central elements.

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