A019294 - cp's OEIS frontend

A019294 Number (> 0) of iterations of sigma (A000203) required to reach a multiple of n when starting with n.

n	a(n)
1	1
2	2
3	4
4	2
5	5
6	1
7	5
8	2
9	7
10	4
11	15
12	3
13	13
14	3
15	2
16	2
17	13
18	4
19	12
20	5
21	2
22	13
23	16
24	2
25	17
26	4
27	9
28	1
29	78
30	7
31	10
32	4
33	17
34	11
35	6
36	5
37	28
38	22
39	4
40	7
41	39
42	2
43	16
44	16
45	16
46	10
47	32
48	5
49	13
50	17
51	9
52	3
53	58
54	11
55	19
56	5
57	13
58	67
59	97
60	2
61	23
62	5
63	16
64	2
65	4
66	8
67	101
68	21
69	19
70	11
71	50
72	4
73	20
74	20
75	23
76	14
77	21
78	10
79	36
80	5
81	15

[1, 2, 4, 2, 5, 1, 5, 2, 7, 4, 15, 3, 13, 3, 2, 2, 13, 4, 12, 5, 2, 13, 16, 2, 17, 4, 9, 1, 78, 7, 10, 4, 17, 11, 6, 5, 28, 22, 4, 7, 39, 2, 16, 16, 16, 10, 32, 5, 13, 17, 9, 3, 58, 11, 19, 5, 13, 67, 97, 2, 23, 5, 16, 2, 4, 8, 101, 21, 19, 11, 50, 4, 20, 20, 23, 14, 21, 10, 36, 5, 15]

cp's OEIS Frontend

A019294 Number (> 0) of iterations of sigma (A000203) required to reach a multiple of n when starting with n.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	2
5	5
6	1
7	5
8	2
9	7
10	4
11	15
12	3
13	13
14	3
15	2
16	2
17	13
18	4
19	12
20	5
21	2
22	13
23	16
24	2
25	17
26	4
27	9
28	1
29	78
30	7
31	10
32	4
33	17
34	11
35	6
36	5
37	28
38	22
39	4
40	7
41	39
42	2
43	16
44	16
45	16
46	10
47	32
48	5
49	13
50	17
51	9
52	3
53	58
54	11
55	19
56	5
57	13
58	67
59	97
60	2
61	23
62	5
63	16
64	2
65	4
66	8
67	101
68	21
69	19
70	11
71	50
72	4
73	20
74	20
75	23
76	14
77	21
78	10
79	36
80	5
81	15

n	a(n)
1	1
2	2
3	4
4	2
5	5
6	1
7	5
8	2
9	7
10	4
11	15
12	3
13	13
14	3
15	2
16	2
17	13
18	4
19	12
20	5
21	2
22	13
23	16
24	2
25	17
26	4
27	9
28	1
29	78
30	7
31	10
32	4
33	17
34	11
35	6
36	5
37	28
38	22
39	4
40	7
41	39
42	2
43	16
44	16
45	16
46	10
47	32
48	5
49	13
50	17
51	9
52	3
53	58
54	11
55	19
56	5
57	13
58	67
59	97
60	2
61	23
62	5
63	16
64	2
65	4
66	8
67	101
68	21
69	19
70	11
71	50
72	4
73	20
74	20
75	23
76	14
77	21
78	10
79	36
80	5
81	15

n	a(n)
1	1
2	2
3	4
4	2
5	5
6	1
7	5
8	2
9	7
10	4
11	15
12	3
13	13
14	3
15	2
16	2
17	13
18	4
19	12
20	5
21	2
22	13
23	16
24	2
25	17
26	4
27	9
28	1
29	78
30	7
31	10
32	4
33	17
34	11
35	6
36	5
37	28
38	22
39	4
40	7
41	39
42	2
43	16
44	16
45	16
46	10
47	32
48	5
49	13
50	17
51	9
52	3
53	58
54	11
55	19
56	5
57	13
58	67
59	97
60	2
61	23
62	5
63	16
64	2
65	4
66	8
67	101
68	21
69	19
70	11
71	50
72	4
73	20
74	20
75	23
76	14
77	21
78	10
79	36
80	5
81	15