A045796 - cp's OEIS frontend

A045796 Numbers m = usigma(sigma(k))/k such that usigma(sigma(k)) is divisible by k.

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

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

cp's OEIS Frontend

A045796 Numbers m = usigma(sigma(k))/k such that usigma(sigma(k)) is divisible by k.

Table of values

List of values

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

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

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