A227042 - cp's OEIS frontend

A227042 Triangle of denominators of harmonic mean of n and m, 1 <= m <= n.

n	a(n)
1	1
2	3
3	1
4	2
5	5
6	1
7	5
8	3
9	7
10	1
11	3
12	7
13	4
14	9
15	1
16	7
17	1
18	1
19	5
20	11
21	1
22	4
23	9
24	5
25	11
26	6
27	13
28	1
29	9
30	5
31	11
32	3
33	13
34	7
35	15
36	1
37	5
38	11
39	2
40	13
41	7
42	5
43	8
44	17
45	1
46	11
47	3
48	13
49	7
50	3
51	2
52	17
53	9
54	19
55	1
56	6
57	13
58	7
59	15
60	8
61	17
62	9
63	19
64	10
65	21
66	1

[1, 3, 1, 2, 5, 1, 5, 3, 7, 1, 3, 7, 4, 9, 1, 7, 1, 1, 5, 11, 1, 4, 9, 5, 11, 6, 13, 1, 9, 5, 11, 3, 13, 7, 15, 1, 5, 11, 2, 13, 7, 5, 8, 17, 1, 11, 3, 13, 7, 3, 2, 17, 9, 19, 1, 6, 13, 7, 15, 8, 17, 9, 19, 10, 21, 1]

cp's OEIS Frontend

A227042 Triangle of denominators of harmonic mean of n and m, 1 <= m <= n.

Table of values

List of values

n	a(n)
1	1
2	3
3	1
4	2
5	5
6	1
7	5
8	3
9	7
10	1
11	3
12	7
13	4
14	9
15	1
16	7
17	1
18	1
19	5
20	11
21	1
22	4
23	9
24	5
25	11
26	6
27	13
28	1
29	9
30	5
31	11
32	3
33	13
34	7
35	15
36	1
37	5
38	11
39	2
40	13
41	7
42	5
43	8
44	17
45	1
46	11
47	3
48	13
49	7
50	3
51	2
52	17
53	9
54	19
55	1
56	6
57	13
58	7
59	15
60	8
61	17
62	9
63	19
64	10
65	21
66	1

n	a(n)
1	1
2	3
3	1
4	2
5	5
6	1
7	5
8	3
9	7
10	1
11	3
12	7
13	4
14	9
15	1
16	7
17	1
18	1
19	5
20	11
21	1
22	4
23	9
24	5
25	11
26	6
27	13
28	1
29	9
30	5
31	11
32	3
33	13
34	7
35	15
36	1
37	5
38	11
39	2
40	13
41	7
42	5
43	8
44	17
45	1
46	11
47	3
48	13
49	7
50	3
51	2
52	17
53	9
54	19
55	1
56	6
57	13
58	7
59	15
60	8
61	17
62	9
63	19
64	10
65	21
66	1

n	a(n)
1	1
2	3
3	1
4	2
5	5
6	1
7	5
8	3
9	7
10	1
11	3
12	7
13	4
14	9
15	1
16	7
17	1
18	1
19	5
20	11
21	1
22	4
23	9
24	5
25	11
26	6
27	13
28	1
29	9
30	5
31	11
32	3
33	13
34	7
35	15
36	1
37	5
38	11
39	2
40	13
41	7
42	5
43	8
44	17
45	1
46	11
47	3
48	13
49	7
50	3
51	2
52	17
53	9
54	19
55	1
56	6
57	13
58	7
59	15
60	8
61	17
62	9
63	19
64	10
65	21
66	1