A210208 - cp's OEIS frontend

A210208 Triangle read by rows in which row n lists the divisors of n that are prime powers, A000961.

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

[1, 1, 2, 1, 3, 1, 2, 4, 1, 5, 1, 2, 3, 1, 7, 1, 2, 4, 8, 1, 3, 9, 1, 2, 5, 1, 11, 1, 2, 3, 4, 1, 13, 1, 2, 7, 1, 3, 5, 1, 2, 4, 8, 16, 1, 17, 1, 2, 3, 9, 1, 19, 1, 2, 4, 5, 1, 3, 7, 1, 2, 11, 1, 23, 1, 2, 3, 4, 8, 1, 5, 25, 1, 2, 13, 1, 3, 9, 27, 1, 2, 4, 7]

cp's OEIS Frontend

A210208 Triangle read by rows in which row n lists the divisors of n that are prime powers, A000961.

Table of values

List of values

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

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

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