A164306 - cp's OEIS frontend

A164306 Triangle read by rows: T(n, k) = k / gcd(k, n), 1 <= k <= n.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	3
10	1
11	1
12	2
13	3
14	4
15	1
16	1
17	1
18	1
19	2
20	5
21	1
22	1
23	2
24	3
25	4
26	5
27	6
28	1
29	1
30	1
31	3
32	1
33	5
34	3
35	7
36	1
37	1
38	2
39	1
40	4
41	5
42	2
43	7
44	8
45	1
46	1
47	1
48	3
49	2
50	1
51	3
52	7
53	4
54	9
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	1
67	1
68	1
69	1
70	1
71	5
72	1
73	7
74	2
75	3
76	5
77	11
78	1
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	1

[1, 1, 1, 1, 2, 1, 1, 1, 3, 1, 1, 2, 3, 4, 1, 1, 1, 1, 2, 5, 1, 1, 2, 3, 4, 5, 6, 1, 1, 1, 3, 1, 5, 3, 7, 1, 1, 2, 1, 4, 5, 2, 7, 8, 1, 1, 1, 3, 2, 1, 3, 7, 4, 9, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 1, 1, 1, 1, 5, 1, 7, 2, 3, 5, 11, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 1]

cp's OEIS Frontend

A164306 Triangle read by rows: T(n, k) = k / gcd(k, n), 1 <= k <= n.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	3
10	1
11	1
12	2
13	3
14	4
15	1
16	1
17	1
18	1
19	2
20	5
21	1
22	1
23	2
24	3
25	4
26	5
27	6
28	1
29	1
30	1
31	3
32	1
33	5
34	3
35	7
36	1
37	1
38	2
39	1
40	4
41	5
42	2
43	7
44	8
45	1
46	1
47	1
48	3
49	2
50	1
51	3
52	7
53	4
54	9
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	1
67	1
68	1
69	1
70	1
71	5
72	1
73	7
74	2
75	3
76	5
77	11
78	1
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	1

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	3
10	1
11	1
12	2
13	3
14	4
15	1
16	1
17	1
18	1
19	2
20	5
21	1
22	1
23	2
24	3
25	4
26	5
27	6
28	1
29	1
30	1
31	3
32	1
33	5
34	3
35	7
36	1
37	1
38	2
39	1
40	4
41	5
42	2
43	7
44	8
45	1
46	1
47	1
48	3
49	2
50	1
51	3
52	7
53	4
54	9
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	1
67	1
68	1
69	1
70	1
71	5
72	1
73	7
74	2
75	3
76	5
77	11
78	1
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	1

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	1
9	3
10	1
11	1
12	2
13	3
14	4
15	1
16	1
17	1
18	1
19	2
20	5
21	1
22	1
23	2
24	3
25	4
26	5
27	6
28	1
29	1
30	1
31	3
32	1
33	5
34	3
35	7
36	1
37	1
38	2
39	1
40	4
41	5
42	2
43	7
44	8
45	1
46	1
47	1
48	3
49	2
50	1
51	3
52	7
53	4
54	9
55	1
56	1
57	2
58	3
59	4
60	5
61	6
62	7
63	8
64	9
65	10
66	1
67	1
68	1
69	1
70	1
71	5
72	1
73	7
74	2
75	3
76	5
77	11
78	1
79	1
80	2
81	3
82	4
83	5
84	6
85	7
86	8
87	9
88	10
89	11
90	12
91	1