A341679 - cp's OEIS frontend

A341679 a(1) = 1; for n > 1, a(n) = n divided by the most recently appearing divisor of n in all previous terms.

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

[1, 2, 3, 2, 5, 3, 7, 4, 3, 2, 11, 6, 13, 7, 5, 8, 17, 3, 19, 4, 7, 2, 23, 12, 5, 13, 9, 14, 29, 6, 31, 16, 11, 17, 7, 6, 37, 19, 3, 8, 41, 14, 43, 4, 15, 2, 47, 24, 7, 25, 17, 26, 53, 27, 5, 8, 19, 29, 59, 12, 61, 31, 9, 8, 13, 33, 67, 4, 23, 14, 71, 18, 73, 37, 15, 19, 11, 6, 79, 20, 9, 41, 83]

cp's OEIS Frontend

A341679 a(1) = 1; for n > 1, a(n) = n divided by the most recently appearing divisor of n in all previous terms.

Table of values

List of values

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

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

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