A343371 - cp's OEIS frontend

A343371 a(n) = 1 + Sum_{d|n, d < n} a(d - 1).

n	a(n)
0	1
1	1
2	2
3	2
4	3
5	2
6	5
7	2
8	5
9	4
10	6
11	2
12	9
13	2
14	8
15	7
16	7
17	2
18	12
19	2
20	12
21	9
22	9
23	2
24	13
25	5
26	12
27	9
28	12
29	2
30	22
31	2
32	14
33	10
34	10
35	10
36	18
37	2
38	15
39	13
40	16
41	2
42	26
43	2
44	20
45	20
46	12
47	2
48	22
49	7
50	23
51	11
52	19
53	2
54	26
55	11
56	23
57	16
58	15
59	2
60	30
61	2
62	25
63	26
64	16
65	14
66	36
67	2
68	22
69	13
70	27
71	2
72	32
73	2
74	21
75	28

[1, 1, 2, 2, 3, 2, 5, 2, 5, 4, 6, 2, 9, 2, 8, 7, 7, 2, 12, 2, 12, 9, 9, 2, 13, 5, 12, 9, 12, 2, 22, 2, 14, 10, 10, 10, 18, 2, 15, 13, 16, 2, 26, 2, 20, 20, 12, 2, 22, 7, 23, 11, 19, 2, 26, 11, 23, 16, 15, 2, 30, 2, 25, 26, 16, 14, 36, 2, 22, 13, 27, 2, 32, 2, 21, 28]

cp's OEIS Frontend

A343371 a(n) = 1 + Sum_{d|n, d < n} a(d - 1).

Table of values

List of values

n	a(n)
0	1
1	1
2	2
3	2
4	3
5	2
6	5
7	2
8	5
9	4
10	6
11	2
12	9
13	2
14	8
15	7
16	7
17	2
18	12
19	2
20	12
21	9
22	9
23	2
24	13
25	5
26	12
27	9
28	12
29	2
30	22
31	2
32	14
33	10
34	10
35	10
36	18
37	2
38	15
39	13
40	16
41	2
42	26
43	2
44	20
45	20
46	12
47	2
48	22
49	7
50	23
51	11
52	19
53	2
54	26
55	11
56	23
57	16
58	15
59	2
60	30
61	2
62	25
63	26
64	16
65	14
66	36
67	2
68	22
69	13
70	27
71	2
72	32
73	2
74	21
75	28

n	a(n)
0	1
1	1
2	2
3	2
4	3
5	2
6	5
7	2
8	5
9	4
10	6
11	2
12	9
13	2
14	8
15	7
16	7
17	2
18	12
19	2
20	12
21	9
22	9
23	2
24	13
25	5
26	12
27	9
28	12
29	2
30	22
31	2
32	14
33	10
34	10
35	10
36	18
37	2
38	15
39	13
40	16
41	2
42	26
43	2
44	20
45	20
46	12
47	2
48	22
49	7
50	23
51	11
52	19
53	2
54	26
55	11
56	23
57	16
58	15
59	2
60	30
61	2
62	25
63	26
64	16
65	14
66	36
67	2
68	22
69	13
70	27
71	2
72	32
73	2
74	21
75	28

n	a(n)
0	1
1	1
2	2
3	2
4	3
5	2
6	5
7	2
8	5
9	4
10	6
11	2
12	9
13	2
14	8
15	7
16	7
17	2
18	12
19	2
20	12
21	9
22	9
23	2
24	13
25	5
26	12
27	9
28	12
29	2
30	22
31	2
32	14
33	10
34	10
35	10
36	18
37	2
38	15
39	13
40	16
41	2
42	26
43	2
44	20
45	20
46	12
47	2
48	22
49	7
50	23
51	11
52	19
53	2
54	26
55	11
56	23
57	16
58	15
59	2
60	30
61	2
62	25
63	26
64	16
65	14
66	36
67	2
68	22
69	13
70	27
71	2
72	32
73	2
74	21
75	28