A334662 - cp's OEIS frontend

A334662 a(n) = Sum_{d|n} gcd(tau(d), pod(d)), where pod(k) is the product of the divisors of k (A007955).

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

[1, 3, 2, 4, 2, 8, 2, 8, 5, 8, 2, 15, 2, 8, 4, 9, 2, 17, 2, 11, 4, 8, 2, 27, 3, 8, 6, 11, 2, 22, 2, 11, 4, 8, 4, 33, 2, 8, 4, 23, 2, 22, 2, 11, 10, 8, 2, 30, 3, 11, 4, 11, 2, 26, 4, 23, 4, 8, 2, 43, 2, 8, 10, 12, 4, 22, 2, 11, 4, 22, 2, 57, 2, 8, 8, 11, 4, 22]

cp's OEIS Frontend

A334662 a(n) = Sum_{d|n} gcd(tau(d), pod(d)), where pod(k) is the product of the divisors of k (A007955).

Table of values

List of values

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

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

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