A384336 - cp's OEIS frontend

A384336 a(1) = 1, a(2) = 2. For n > 2, a(n) = number of a(k), k = 1..n-2 such that a(k) divides a(n-1).

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

[1, 2, 1, 1, 2, 4, 5, 3, 3, 4, 6, 7, 3, 5, 4, 7, 4, 8, 9, 6, 9, 7, 5, 5, 6, 10, 9, 8, 10, 10, 11, 3, 6, 12, 17, 3, 7, 6, 14, 9, 11, 4, 9, 12, 21, 12, 22, 7, 7, 8, 12, 23, 3, 8, 13, 3, 9, 15, 14, 12, 26, 6, 17, 4, 10, 12, 29, 3, 10, 13, 4, 11, 5, 7, 9, 17, 5, 8]

cp's OEIS Frontend

A384336 a(1) = 1, a(2) = 2. For n > 2, a(n) = number of a(k), k = 1..n-2 such that a(k) divides a(n-1).

Table of values

List of values

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

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

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