A359211 - cp's OEIS frontend

A359211 a(n) = tau(3*n-1)/2, where tau(n) = number of divisors of n, cf. A000005.

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

[1, 1, 2, 1, 2, 1, 3, 1, 2, 1, 3, 2, 2, 1, 3, 1, 3, 1, 4, 1, 2, 2, 3, 1, 2, 2, 5, 1, 2, 1, 3, 2, 3, 1, 4, 1, 4, 1, 3, 2, 2, 2, 4, 1, 2, 1, 6, 2, 2, 1, 4, 2, 2, 2, 3, 1, 4, 1, 5, 1, 4, 2, 3, 1, 2, 1, 6, 2, 2, 2, 3, 2, 2, 2, 6, 1, 4, 1, 3, 1, 3, 3, 4, 1, 2, 1, 6, 1, 4, 1]

cp's OEIS Frontend

A359211 a(n) = tau(3*n-1)/2, where tau(n) = number of divisors of n, cf. A000005.

Table of values

List of values

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

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

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