A061391 - cp's OEIS frontend

A061391 a(n) = t(n,3) = Sum_{d|n} tau(d^3), where tau(n) = number of divisors of n, cf. A000005.

n	a(n)
1	1
2	5
3	5
4	12
5	5
6	25
7	5
8	22
9	12
10	25
11	5
12	60
13	5
14	25
15	25
16	35
17	5
18	60
19	5
20	60
21	25
22	25
23	5
24	110
25	12
26	25
27	22
28	60
29	5
30	125
31	5
32	51
33	25
34	25
35	25
36	144
37	5
38	25
39	25
40	110
41	5
42	125
43	5
44	60
45	60
46	25
47	5
48	175
49	12
50	60
51	25
52	60
53	5
54	110
55	25
56	110
57	25
58	25
59	5
60	300
61	5
62	25
63	60
64	70
65	25
66	125
67	5
68	60
69	25
70	125
71	5
72	264

[1, 5, 5, 12, 5, 25, 5, 22, 12, 25, 5, 60, 5, 25, 25, 35, 5, 60, 5, 60, 25, 25, 5, 110, 12, 25, 22, 60, 5, 125, 5, 51, 25, 25, 25, 144, 5, 25, 25, 110, 5, 125, 5, 60, 60, 25, 5, 175, 12, 60, 25, 60, 5, 110, 25, 110, 25, 25, 5, 300, 5, 25, 60, 70, 25, 125, 5, 60, 25, 125, 5, 264]

cp's OEIS Frontend

A061391 a(n) = t(n,3) = Sum_{d|n} tau(d^3), where tau(n) = number of divisors of n, cf. A000005.

Table of values

List of values

n	a(n)
1	1
2	5
3	5
4	12
5	5
6	25
7	5
8	22
9	12
10	25
11	5
12	60
13	5
14	25
15	25
16	35
17	5
18	60
19	5
20	60
21	25
22	25
23	5
24	110
25	12
26	25
27	22
28	60
29	5
30	125
31	5
32	51
33	25
34	25
35	25
36	144
37	5
38	25
39	25
40	110
41	5
42	125
43	5
44	60
45	60
46	25
47	5
48	175
49	12
50	60
51	25
52	60
53	5
54	110
55	25
56	110
57	25
58	25
59	5
60	300
61	5
62	25
63	60
64	70
65	25
66	125
67	5
68	60
69	25
70	125
71	5
72	264

n	a(n)
1	1
2	5
3	5
4	12
5	5
6	25
7	5
8	22
9	12
10	25
11	5
12	60
13	5
14	25
15	25
16	35
17	5
18	60
19	5
20	60
21	25
22	25
23	5
24	110
25	12
26	25
27	22
28	60
29	5
30	125
31	5
32	51
33	25
34	25
35	25
36	144
37	5
38	25
39	25
40	110
41	5
42	125
43	5
44	60
45	60
46	25
47	5
48	175
49	12
50	60
51	25
52	60
53	5
54	110
55	25
56	110
57	25
58	25
59	5
60	300
61	5
62	25
63	60
64	70
65	25
66	125
67	5
68	60
69	25
70	125
71	5
72	264

n	a(n)
1	1
2	5
3	5
4	12
5	5
6	25
7	5
8	22
9	12
10	25
11	5
12	60
13	5
14	25
15	25
16	35
17	5
18	60
19	5
20	60
21	25
22	25
23	5
24	110
25	12
26	25
27	22
28	60
29	5
30	125
31	5
32	51
33	25
34	25
35	25
36	144
37	5
38	25
39	25
40	110
41	5
42	125
43	5
44	60
45	60
46	25
47	5
48	175
49	12
50	60
51	25
52	60
53	5
54	110
55	25
56	110
57	25
58	25
59	5
60	300
61	5
62	25
63	60
64	70
65	25
66	125
67	5
68	60
69	25
70	125
71	5
72	264