A342616 - cp's OEIS frontend

A342616 a(1) = 1, a(n+1) = Sum_{d | a(n)} c_d, where c_d = number of instances of d | a(k) for 1 <= k < n.

n	a(n)
1	1
2	1
3	2
4	4
5	7
6	6
7	11
8	8
9	15
10	13
11	11
12	13
13	14
14	21
15	21
16	25
17	19
18	18
19	33
20	29
21	21
22	36
23	49
24	30
25	52
26	43
27	27
28	41
29	29
30	31
31	31
32	33
33	49
34	42
35	76
36	55
37	46
38	51
39	53
40	40
41	70
42	78
43	85
44	53
45	46
46	65
47	60
48	116
49	79
50	50
51	87
52	72
53	123
54	74
55	77
56	72
57	140
58	132
59	143
60	74
61	89
62	62
63	92
64	110
65	125
66	82

[1, 1, 2, 4, 7, 6, 11, 8, 15, 13, 11, 13, 14, 21, 21, 25, 19, 18, 33, 29, 21, 36, 49, 30, 52, 43, 27, 41, 29, 31, 31, 33, 49, 42, 76, 55, 46, 51, 53, 40, 70, 78, 85, 53, 46, 65, 60, 116, 79, 50, 87, 72, 123, 74, 77, 72, 140, 132, 143, 74, 89, 62, 92, 110, 125, 82]

cp's OEIS Frontend

A342616 a(1) = 1, a(n+1) = Sum_{d | a(n)} c_d, where c_d = number of instances of d | a(k) for 1 <= k < n.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	4
5	7
6	6
7	11
8	8
9	15
10	13
11	11
12	13
13	14
14	21
15	21
16	25
17	19
18	18
19	33
20	29
21	21
22	36
23	49
24	30
25	52
26	43
27	27
28	41
29	29
30	31
31	31
32	33
33	49
34	42
35	76
36	55
37	46
38	51
39	53
40	40
41	70
42	78
43	85
44	53
45	46
46	65
47	60
48	116
49	79
50	50
51	87
52	72
53	123
54	74
55	77
56	72
57	140
58	132
59	143
60	74
61	89
62	62
63	92
64	110
65	125
66	82

n	a(n)
1	1
2	1
3	2
4	4
5	7
6	6
7	11
8	8
9	15
10	13
11	11
12	13
13	14
14	21
15	21
16	25
17	19
18	18
19	33
20	29
21	21
22	36
23	49
24	30
25	52
26	43
27	27
28	41
29	29
30	31
31	31
32	33
33	49
34	42
35	76
36	55
37	46
38	51
39	53
40	40
41	70
42	78
43	85
44	53
45	46
46	65
47	60
48	116
49	79
50	50
51	87
52	72
53	123
54	74
55	77
56	72
57	140
58	132
59	143
60	74
61	89
62	62
63	92
64	110
65	125
66	82

n	a(n)
1	1
2	1
3	2
4	4
5	7
6	6
7	11
8	8
9	15
10	13
11	11
12	13
13	14
14	21
15	21
16	25
17	19
18	18
19	33
20	29
21	21
22	36
23	49
24	30
25	52
26	43
27	27
28	41
29	29
30	31
31	31
32	33
33	49
34	42
35	76
36	55
37	46
38	51
39	53
40	40
41	70
42	78
43	85
44	53
45	46
46	65
47	60
48	116
49	79
50	50
51	87
52	72
53	123
54	74
55	77
56	72
57	140
58	132
59	143
60	74
61	89
62	62
63	92
64	110
65	125
66	82